# How to Write a Polynomial in Standard Form

• Mulki Sulaeman
• May 14, 2023

## What is a Polynomial?

A polynomial is an algebraic expression that consists of variables, coefficients, and exponents that can be combined using the operations of addition, subtraction, and multiplication. In other words, it is a mathematical expression that can include one or more terms, each of which has a variable raised to a power.

Polynomials are commonly used in mathematics to model complex phenomena in the real world, such as populations, economies, and physical systems. They are also used in computer science for data analysis and signal processing.

A polynomial can be written in various forms, including standard form, factored form, and expanded form. However, in this article, we will focus on how to write a polynomial in standard form.

## What is Standard Form?

Standard form is the usual way of writing a polynomial in which the terms are arranged in descending order of exponents. This means that the term with the highest exponent comes first, followed by terms with lower exponents. For example, the standard form of the polynomial 4x^3 – 3x^2 + 2x + 1 is 4x^3 – 3x^2 + 2x + 1.

To write a polynomial in standard form, you need to follow a few simple steps:

## Step 1: Collect Like Terms and Arrange in Descending Order of Exponents

The first step in writing a polynomial in standard form is to collect like terms and arrange them in descending order of exponents. Like terms are terms that have the same variables and exponents. For example, in the polynomial 3x^3 – 2x^2 + 5x – 4, the terms 3x^3 and -2x^2 are like terms because they both have x raised to a power and they both have the same coefficient.

To arrange like terms in descending order of exponents, start with the term that has the highest power of the variable and continue in descending order. In the polynomial 3x^3 – 2x^2 + 5x – 4, the terms are already arranged in descending order of exponents. However, if the terms were not in descending order, you would need to rearrange them accordingly.

## Step 2: Write in Standard Form

Once you have collected like terms and arranged them in descending order of exponents, the next step is to write the polynomial in standard form. To do this, simply write the terms in order from highest exponent to lowest exponent.

For example, the polynomial 3x^3 – 2x^2 + 5x – 4 can be written in standard form as 3x^3 – 2x^2 + 5x – 4.

Another example is the polynomial 2x^4 + 3x^2 – 5x^3 + 8. To convert this polynomial to standard form, rearrange the terms in descending order of exponents, which gives: 2x^4 – 5x^3 + 3x^2 + 8. Therefore, the standard form of the polynomial 2x^4 + 3x^2 – 5x^3 + 8 is 2x^4 – 5x^3 + 3x^2 + 8.

## In Conclusion

Writing a polynomial in standard form is important in mathematics because it allows you to easily compare and analyze polynomials. By arranging the terms in descending order of exponents, you can quickly see the highest degree term and the overall shape of the polynomial. With these simple steps, you can convert any polynomial to standard form and better understand its properties.

## What is Standard Form of a Polynomial?

Before we dive into how to write a polynomial in standard form, let’s first define what standard form means. The standard form of a polynomial is a way of writing a polynomial in a specific structure that helps in identifying its degree and leading coefficient easily. For instance, the standard form of a quadratic polynomial is ax2+bx+c, where ‘a’ is the quadratic coefficient, ‘b’ is the linear coefficient, and ‘c’ is the constant coefficient.

In general, the standard form of a polynomial is written as the sum of monomials, where the exponents of the variables in each monomial are arranged in decreasing order. For example, a polynomial in standard form with three terms might look like this:

4×3 + 2×2 – 3x

In this case, the exponents of the variables are arranged in decreasing order, from 3 to 1. You might also notice that the term with the highest degree, 4×3, is written first, followed by the term with the second-highest degree, 2×2, and finally the term with the lowest degree, -3x.

## How to Write a Polynomial in Standard Form

Now that we know what a polynomial in standard form looks like, let’s see how we can write a polynomial in standard form. Let’s take an example of a polynomial:

3×2 + 6x – 2×3

In this polynomial, the exponents of the variables are not arranged in decreasing order. So, to write it in standard form, we need to rearrange the terms in the correct order. To do this, we need to rewrite each term with its exponent first, then arrange them in decreasing order.

So let’s start by rewriting each term with its exponent:

3×2 + 6x – 2×3 ⟶ -2×3 + 3×2 + 6x

Now that we have the exponents of each term arranged in decreasing order, we can write the polynomial in standard form:

-2×3 + 3×2 + 6x

Now, let’s take another example -4×4 + 5×2 + 2x – 7.

The first step is to write the polynomial terms in decreasing order of their exponents, starting with the term with the highest degree. Let’s rewrite the polynomial in descending order of the exponents.

-4×4 + 5×2 + 2x – 7 ⟶ -4×4 + 5×2 + 2x – 7

Since the polynomial is already in descending order of the exponents, it is, therefore, already in standard form.

## Conclusion

Writing a polynomial in standard form involves arranging the terms of the polynomial in decreasing order of the exponents. It helps in identifying the degree of the polynomial and the leading coefficient easily. Therefore, writing a polynomial in standard form is an important skill that can make it easier to solve polynomial equations, factor polynomials, and perform other mathematical operations involving polynomials.

Remember that to write a polynomial in standard form, you need to rearrange the terms in descending order of their degree. With practice, you will get better at recognizing the standard form of polynomials quickly.

## Steps to Write a Polynomial in Standard Form

Writing a polynomial in standard form is an essential skill that every student studying mathematics must acquire. A polynomial is a mathematical expression with one or more terms, where each term has a variable exponent and a coefficient. Standard form is the way of writing the polynomial by arranging the terms in decreasing order of exponents. Here are the steps to write a polynomial in standard form.

## Step 1: Arrange the terms in descending order of exponents

The first step to writing a polynomial in standard form is to arrange the terms in the polynomial in descending order of exponents. For instance, consider the following polynomial:

3x2 + 2x – 5x3 – 1

The exponents in the polynomial are 2, 1, 3, and 0. Arrange the terms with the highest exponents first and the lowest exponents last. Doing this for the above polynomial will result in:

-5x3 + 3x2 + 2x – 1

## Step 2: Combine the like terms

The second step to writing a polynomial in standard form is to combine the like terms. Like terms are terms that have the same variables and the same exponents. For example, consider the polynomial:

4x3 – 5x2 + 2x3 + 9 – 2x2

The like terms in this polynomial are 4x3 and 2x3, and -5x2 and -2x2. Adding the like terms gives:

6x3 – 7x2 + 9

## Step 3: Write the coefficients of each term in front of the variable

The third and final step is to write the coefficients of each term in front of the variable in decreasing order of exponents. For example, the polynomial:

-3 + 5x3 – 2x2 + 6x4

Arranging the terms in descending order of exponents and writing the coefficients in front of the variables will result in:

6x4 + 5x3 – 2x2 – 3

Following these three steps will help you write any polynomial in standard form. Remember to arrange the terms in decreasing order of exponents, combine the like terms, and write the coefficients of each term in front of the variable.

So, that’s it, you now know the steps to write any polynomial in standard form. Practice with different polynomials and remain consistent with these steps to master writing polynomials in standard form.

## Example of Writing Polynomial in Standard Form

Writing polynomials in standard form can be a daunting task for any math student. But with a few simple steps, you can master this skill and tackle any polynomial with confidence.

Let’s take the example of the polynomial 3x^2 – 2 + 5x^3 – 4x. The first step to writing a polynomial in standard form is to arrange the terms in descending order of degree. In other words, the term with the highest degree should be listed first, followed by the term with the second-highest degree, and so on.

In our example, the term with the highest degree is 5x^3, followed by 3x^2, and then -4x, and -2. So, we need to rearrange the terms in the following order:

5x^3 + 3x^2 – 4x – 2

Congratulations! You have successfully written a polynomial in standard form. But, what exactly is standard form and why is it important?

Standard form is a way of writing polynomials that makes them easier to compare, add, and subtract. It also helps to identify the leading coefficient, which is the coefficient of the term with the highest degree. This coefficient is important because it can tell us about the behavior of the function as x approaches infinity or negative infinity.

Another important aspect of writing polynomials in standard form is that it can help in identifying the roots or zeros of the function. The roots or zeros of a polynomial are the values of x that make the function equal to zero.

For example, in our polynomial 5x^3 + 3x^2 – 4x – 2, we can easily find the roots by setting the function equal to zero and solving for x:

5x^3 + 3x^2 – 4x – 2 = 0

x = -0.585, -1.48, 0.484

By writing the polynomial in standard form, we were able to easily identify the roots of the function.

In conclusion, writing polynomials in standard form may seem like a tedious task, but it can save time and effort in the long run. By arranging the terms in descending order of degree, we can easily compare, add, and subtract polynomials, identify the leading coefficient, and find the roots of the function. Always remember to keep practicing and soon you’ll be able to write polynomials in standard form with ease!

## Practice to Perfect the Skill of Writing Polynomial in Standard Form

If you are learning algebra, you must have come across the concept of a polynomial. A polynomial is an expression consisting of variables and constants, combined using different arithmetic operations like addition, subtraction, multiplication, and division. Writing a polynomial in standard form is one of the crucial skills you need to acquire to excel in this subject. In this article, we will go through the basics of writing polynomials in standard form and suggest ways to practice and perfect this skill.

## What is Standard Form of a Polynomial?

A polynomial is said to be in standard form if the terms are written in decreasing order of their degrees. A degree is the highest exponent of the variable in a polynomial expression. For example, the polynomial 3x^2 + 2x – 1 is in standard form since the terms are written in descending order of their degree, i.e., 3x^2 comes first, followed by the term 2x, and then the constant term -1. If a polynomial is not in standard form, we need to rearrange the terms to make it so.

## Steps to Write a Polynomial in Standard Form

If you have a polynomial in a random order, you can follow these steps to write it in standard form:

1. Identify the term with the highest degree or exponent. This term will come first in the standard form.
2. Arrange the rest of the terms in descending order of their degrees, with the degree of each term becoming lower from left to right.
3. Show the coefficients of each term, arranging them next to their corresponding variables. Do not leave any term out of the polynomial, and be sure to include 0 before any missing coefficients.

Let’s take an example to understand this better. Suppose you have the polynomial expression -x^3+4x+2x^2-1. To write this in standard form, we follow these steps:

1. The highest degree here is 3, so the term -x^3 will come first.
2. The degree of the next term is 2, so we write 2x^2 next to -x^3.
3. The degree of the next term is 1, which is less than 2 and 3, so we write 4x next to 2x^2.
4. Finally, we add the constant term -1, making the standard form of this polynomial -x^3+2x^2+4x-1.

## Practicing Writing Polynomials in Standard Form

Writing polynomials in standard form correctly helps in solving equations and graphing them accurately. Here are some ways to practice and perfect this skill:

1. Practice with different levels of difficulty: You may begin with basic polynomials involving simple variables and constants. Gradually, you can move on to more complicated ones that have multiple variables and a high number of terms. As the difficulty level increases, give more emphasis on keeping the terms in descending order based on their degrees.
2. Study examples and solutions: You can find multiple available examples online or in textbooks to practice. Begin by reading and understanding the examples and trying to solve them using the steps mentioned above. Then, compare your solution with the actual answer to check for errors. Through this, you can learn the nuances of writing polynomials in standard form and how to avoid common errors.
3. Take online quizzes: As you become familiar with the basics, take online quizzes to test your understanding of polynomial standard forms. Multiple websites offer quizzes and practice exercises specifically structured to test this skill. This approach to learning enables you to learn from your mistakes and reinforce your understanding.
4. Collaborate with peers: Team up with your classmates, friends, or a teacher to work on writing polynomials in standard form. Discuss the different techniques used for specific examples and try it on your own. Engaging with peers can help you learn alternative approaches and perspectives to solving the problems, which can, in turn, be useful in other areas of algebra.
5. Repeat and Evaluate: Repeating the steps mentioned above with different polynomials can help internalize and master the skill of writing polynomials in standard form. Evaluate your results to understand which areas you need to work on to craft the perfect polynomial.

Writing polynomials in standard form may seem daunting at first, but with practice, you can master this skill. When faced with challenging problems, approach it systematically, and remember to arrange the terms in decreasing order of their degrees. Follow the steps mentioned and review your solution to ensure you have stayed on the correct path. The more you practice, the more intuitive it becomes in writing polynomials in standard form.