#### 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:
$$5y^2=10 \\ y^2=2 \\ y=\pm\sqrt2$$

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Published by
McDougal Littell

ISBN 10:
0618595414

ISBN 13:
978-0-61859-541-9

$$y=\pm\sqrt2$$

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