## What are the conditions for using synthetic division?

How to do Synthetic Division?

- The divisor should be a linear factor. This means that the divisor should be an expression of degree 1.
- The leading coefficient of the divisor should also be 1. If the divisor’s coefficient is other than 1, the synthetic division process will get messed up.

### Do you add or subtract in synthetic division?

addition

When you use long division, you subtract at each step. Synthetic division uses addition instead, so we switch the sign to account for this. If you’re dividing by x – 4, you’ll use a positive 4.

#### When can synthetic division not be used?

We can only divide by a binomial whose leading coefficient is 1–thus, we must factor the leading coefficient out of the binomial and divide by the leading coefficient separately. Also, the binomial must have degree 1; we cannot use synthetic division to divide by a binomial like x2 + 1.

**Why do you add in synthetic division but subtract in long division?**

Synthetic divsion uses addition instead of subtraction. Less chance of error. Synthetic division makes searching for rational roots much faster. Syhthetic division is also the most efficient way to evaluate a polynomial at a given number.

**Can you do synthetic division with a leading coefficient?**

You need a monic linear divisor to use synthetic division. That means the coefficient of x must be 1. However, you can divide by a linear divisor whose leading coefficient is not 1 if you do it in multiple steps. You can also divide by a quadratic divisor by using synthetic division repeatedly.

## What is the difference between using polynomial long division and synthetic division?

Instead of the typical division bracket as in long division, in synthetic division you use right-facing perpendicular lines, leaving room for multiple rows of division. Only the coefficients of the polynomial being divided are included inside the bracket, at the top.

### When can you not do synthetic division?

#### What is Horner function?

Horner’s rule for polynomial division is an algorithm used to simplify the process of evaluating a polynomial f(x) at a certain value x = x0 by dividing the polynomial into monomials (polynomials of the 1st degree).

**What is the remainder of the synthetic division?**

Comparing, you can see that we got the same result from the synthetic division, the same quotient (namely, 1 x + 6) and the same remainder at the end (namely, 12 ), as when we did the long division:

**What are the rules of exponents?**

The rules of exponents, also known as the “exponent rules”, are some of the rules on the subject of algebra that we need to be familiar with. Mastering these basic exponent rules along with basic rules of logarithms (also known as “log rules”) will make your study of algebra very productive and enjoyable.

## How do I set up a synthetic division?

At this point, I can now set up the synthetic division by extracting the coefficients of the dividend and then lining them up on top. Directly to the left side, place the value of c = – 2 inside the “box”. Finally, construct a horizontal line just below the coefficients of the dividend. 1. Drop the first coefficient below the horizontal line. 2.

### What are the basic procedures for dividing polynomials using synthetic division?

In this lesson, I will go over five (5) examples that should hopefully make you familiar with the basic procedures in successfully dividing polynomials using synthetic division. Make sure the dividend is in standard form. That means the powers are in decreasing order. The divisor must be in the form x – \\left ( c ight).