Precalculus (6th Edition) Blitzer

Published by Pearson
ISBN 10: 0-13446-914-3
ISBN 13: 978-0-13446-914-0

Chapter P - Section P.7 - Equations - Exercise Set: 63

Answer

$\left\{-\sqrt{10}, \sqrt{10}\right\}$

Work Step by Step

Subtract 1 on both sides of the equation to obtain: $5x^2 = 50$ Divide 5 on both sides of the equation to obtain: $x^2=10$ Take the square root of both sides to obtain: $x = \pm \sqrt{10}$ Thus, the solution set of the given equation is $\left\{-\sqrt{10}, \sqrt{10}\right\}$.
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