9.4 Multiplying and Dividing Rational Expressions

-To multiply and divide rational expressions. -Use rational expressions to model real life

quantities

Simplified Form

A rational expression is in simplified form if its numerator and denominator have no common factors other than ±1.

Simplify

1. x2 + 6x x3

2. x2 – 4x – 12 2x2 – 72

Multiply the Rational Expressions

Perform the operation and simplify the result:

6x2y3 . 10x3y2

2x2y2 18y2

Example

Perform the operation and simplify the result:

Divide the Rational Expressions

Perform the operation and simplify the result:

U-try

Perform the operation and simplify the result:

HOMEWORK

p. 558#3, 4, 19-23 odd, 27-33 odd,

37-41 odd