Answer
$$y=\pm\sqrt2$$
Work Step by Step
We first try to get the variable squared alone on one side of the equation. Then, we take the square root in order to solve:
$$5y^2=10 \\ y^2=2 \\ y=\pm\sqrt2$$
Algebra 2 (1st Edition)
by Larson, Ron; Boswell, Laurie; Kanold, Timothy D.; Stiff, Lee
Published by
McDougal Littell
ISBN 10:
0618595414
ISBN 13:
978-0-61859-541-9
Chapter 4 Quadratic Functions and Factoring - Chapter Review - Page 320: 26
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