#### Answer

$\dfrac{-5+10\sqrt{7}}{5}=2\sqrt{7}-1$

#### Work Step by Step

$\dfrac{-5+10\sqrt{7}}{5}$
Take out common factor $5$ from the numerator and simplify:
$\dfrac{-5+10\sqrt{7}}{5}=\dfrac{5(-1+2\sqrt{7})}{5}=2\sqrt{7}-1$

Published by
Pearson

ISBN 10:
0321726391

ISBN 13:
978-0-32172-639-1

$\dfrac{-5+10\sqrt{7}}{5}=2\sqrt{7}-1$

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