Algebra 2 (1st Edition)

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

Chapter 13, Trigonometric Ratios and Functions - 13.4 Evaluate Inverse Trigonometric Functions - 13.4 Exercises - Mixed Review - Page 830: 42

Answer

$$x=\frac{1}{2}, -\frac{5}{9}$$

Work Step by Step

Solving the equation for x, we find: $$9x\left(2x-1\right)+5\left(2x-1\right) \\ \left(2x-1\right)\left(9x+5\right) \\ x=\frac{1}{2}, -\frac{5}{9}$$ Checking this solution by plugging it back in, we find that the solution is correct.
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