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Elementary and Intermediate Algebra
Mark Dugopolski, Southeastern Louisiana University

Rational Expressions
Multiplication and Division

Warm-Ups



1

2/3 · 5/3 = 10/9
A)TRUE
B)FALSE
2

The product of (x - 7)/3 and 6/(7 - x) is -2.
A)TRUE
B)FALSE
3

Dividing by 2 is equivalent to multiplying by 1/2.
A)TRUE
B)FALSE
4

3 ÷ x = 1/3 · x for any nonzero number x.
A)TRUE
B)FALSE
5

Factoring polynomials is essential in multiplying rational expressions.
A)TRUE
B)FALSE
6

One-half of one-fourth is one-sixth.
A)TRUE
B)FALSE
7

One-half divided by three is three-halves.
A)TRUE
B)FALSE
8

The quotient of (839 - 487) and (487 - 839) is -1.
A)TRUE
B)FALSE
9

a/3 ÷ 3 = a/9 for any value of a.
A)TRUE
B)FALSE
10

a/b · b/a = 1 for any nonzero values of a and b.
A)TRUE
B)FALSE