How do you solve $sqrt(y+7) = 8$ ?

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Answer 1 · 2016-06-14T16:49:45

$y=57$

$sqrt(y+7)=8$
$implies (y+7)^(1/2)=8$

Squaring both sides, we get

$implies {(y+7)^(1/2)}^2 =(8)^2$
$implies y+7=64$
$implies y=64-7=57$
$implies y=57$

How do you solve sqrt(y+7) = 8sqrt(y+7) = 8?