### Home > AC > Chapter 10 > Lesson 10.1.2 > Problem 10-21

10-21.

Simplify the expressions below.

for or Factor the numerator and denominator.

After factoring, look for a Giant One to remove.

for or Refer to part (a).

for This is division with fractions. Here is a sample division problem with numbers.

Step 1: Rewrite as multiplication by taking the reciprocal of the divisor.

Step 2: Factor

and use the Commutative Property to rewrite the problem so

there are Giant Ones.Step 3: Remove the Giant Ones.

Apply these steps to part (c).