1. Lesson 88 Warm Up
Pg. 576

2. Multiplying and Dividing Rational Expressions
Algebra 1 Lesson 88
Multiplying and Dividing Rational Expressions

3. Multiplying Rational Expressions
If a, b, c, and d are nonzero polynomials, a . c = ac b d bd

4. Dividing Rational Expressions
If a, b, c, and d are nonzero polynomials, a ÷ c = a . d = ad b d b c bc

5. Example 1
Find each product.
6x4y . 7x2y xy3 3x3y2
6x x y y2

6. Example 2
Multiply (x2 – 2x – 15). Simplify the answer x – 15

7. Example 3
Multiply 8m2n + 2mn Simplify m mn + 6n

8. Example 4 Find each quotient. 5st4 ÷ 15s2t 4s2t 2s3t2
9r2 – 12r ÷ (3r – 4)
x2 + 4x + 3 ÷ x x x

9. Example 5
A business makes a profit of x x x dollars for each item sold. If x2 + 5x + 4 items are sold, what is the total profit in terms of x?

10. Lesson 88 Homework
Pg. 579 Practice, #1-10