Algebra 2 (1st Edition)

Published by McDougal Littell
ISBN 10: 0618595414
ISBN 13: 978-0-61859-541-9

Chapter 8 Rational Functions - 8.6 Solve Rational Equations - 8.6 Exercises - Quiz for Lessons 8.4-8.6 - Page 595: 8

Answer

$$x=9,\:x=-2$$

Work Step by Step

For cross multiplication, we know: $$\frac{a}{d} =\frac{b}{c} \rightarrow ac=bd$$ Thus, we find: $$\left(x-4\right)\left(x+7\right)=\left(x-1\right)\cdot \:10\\ x=9,\:x=-2$$ Checking our solution by plugging the given value back into the equation, we assure that the solutions are not extraneous.
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