Algebra: A Combined Approach (4th Edition)

Published by Pearson
ISBN 10: 0321726391
ISBN 13: 978-0-32172-639-1

Chapter 7 - Section 7.1 - Simplifying Rational Expressions - Exercise Set - Page 491: 66


Answer -10-x is correct.

Work Step by Step

Answer is correct -10-x because: $\frac{100-x^{2}}{x-10}$= $\frac{10^{2}-x^{2}}{x-10}$= $\frac{(10-x)(10+x)}{-(10-x)}$= $\frac{(10+x)}{(-1)}$=-(10+x)=-10-x
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