# How to Divide Polynomials Using Synthetic Division?

When a polynomial has to be divided by a linear factor, the synthetic division is the shortest method. In this article, let's familiarize ourselves with dividing polynomials using synthetic division.

In mathematics, there are two different ways to divide polynomials. One is the long division method. Another method is synthetic division. Between the two methods, the shortcut method for dividing polynomials is the synthetic division method.

**Related Topics**

**A step-by-step guide to dividing polynomials by using synthetic division**

Synthetic division is a method used to perform the division operation on polynomials when the divisor is a linear factor. One of the advantages of using this method over the traditional long method is that the synthetic division allows the person to calculate variables without writing them while doing polynomial division, which also makes it easier than the long method.

**Synthetic division of polynomials definition**

When we divide a polynomial \(p(x)\) by a linear factor \((x – a)\) (which is a polynomial of degree \(1\)), \(Q(x)\) is the quotient polynomial and \(R\) is the remainder.

\(\color{blue}{\frac{p(x)}{q(x)} = \frac{p(x)}{(x- a)} = Quotient + (\frac{Remainder}{(x – a)})}\)

\(\color{blue}{\frac{p(x)}{(x – a)} = Q(x) + (\frac{R}{(x – a)})}\)

We use synthetic division to evaluate polynomials by the remainder theorem, wherein we evaluate the value of \(p(x)\) at \(a\) while dividing \((\frac{p(x)}{(x – a)})\). That is, to find if \(a\) is the factor of the polynomial \(p(x)\), use the synthetic division to find the remainder quickly.

**Synthetic division method**

The following steps are taken when performing synthetic division and finding the quotient and remainder.

- Check if the polynomial is in the standard form.
- Write the coefficients in the dividend’s place and write the zero of the linear factor in the divisor’s place.
- Bring the first coefficient down.

- Multiply it with the divisor and write it below the next coefficient.
- Add them and write the value below.

- Repeat the previous \(2\) steps until you reach the last term.

- Separate the last term thus obtained which is the remainder.
- Now group the coefficients with the variables to get the quotient.

Note that the resultant polynomial is of one order less than the dividend polynomial.

**Dividing Polynomials by Using Synthetic Division** **– Example 1:**

Solve by using the synthetic division method. \(\frac{3x^3+5x-1}{x+1}\)

**Exercises for** **Dividing Polynomials by Using Synthetic Division**

**Perform synthetic division to find the quotient of the following expression.**

- \(\color{blue}{\frac{4x^3-8x^2-x+5}{2x-1}}\)
- \(\color{blue}{\frac{x^3-5x^2+3x+7}{x-3}}\)
- \(\color{blue}{\frac{8x^3+12x^2-2x}{4x^2-1}}\)

- \(\color{blue}{2x^2-3x-2+\frac{3}{2x-1}}\)
- \(\color{blue}{x^2-2x-3-\frac{2}{x-3}}\)
- \(\color{blue}{2x+3+\frac{3}{4x^2-1}}\)

## Related to This Article

### More math articles

- The Ultimate AP Calculus AB Course
- How to Solve Integers and Absolute Value Problems? (+FREE Worksheet!)
- Top 5 ACT Math Study Guides
- The Best SAT Math Worksheets: FREE & Printable
- Bеѕt Cаlсulаtоr fоr ACT Aspire Mаth Tеѕt
- What is the difference between LCM and HCF and how to calculate these properly?
- 10 Most Common 3rd Grade FSA Math Questions
- 7th Grade FSA Math Practice Test Questions
- Number Properties Puzzle -Critical Thinking 1
- The Ultimate 6th Grade RISE Math Course (+FREE Worksheets)

## What people say about "How to Divide Polynomials Using Synthetic Division? - Effortless Math: We Help Students Learn to LOVE Mathematics"?

No one replied yet.