9.5 Adding and Subtracting Rational Expressions

Adding and Subtracting Add: To add or subtract fractions, you must first:

Add:

To add or subtract fractions, you must first:

Example 1 . Find the Least Common Multiple (What would be your common denominator?) 4x 2 – 36 6x 2 + 36x + 54 We’re looking for:

4x 2 – 36 6x 2 + 36x + 54

We’re looking for:

3x 2 – 9x – 30 6x + 30 c. 5x 2 + 15x + 10 2x 2 - 8

3x 2 – 9x – 30 6x + 30

c. 5x 2 + 15x + 10 2x 2 - 8

Example 2. Add. a.

a.

b.

b.

Example 3. Subtract. a.

a.

b.

b.

Example 4. Simplify. 2 options to simplify: 1. 2.

Assignment Pg 507 #4 – 40e

Pg 507 #4 – 40e