Precalculus: Mathematics for Calculus, 7th Edition

Published by Brooks Cole
ISBN 10: 1305071751
ISBN 13: 978-1-30507-175-9

Chapter 1 - Section 1.4 - Rational Expressions - 1.4 Exercises: 2


To simplify a rational expressions, we cancel factors that are common to the numerator and denominator. So the expression $\frac{(x + 1)(x + 2)}{(x + 3)(x + 2)}$ simplifies to $\frac{x + 1}{x + 3}$.

Work Step by Step

We can cancel the factors (x + 2) and (x + 2) because they are common to both the numerator and denominator.
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