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How do you simplify $\sqrt{x - 4} = 2$ $sqrt(x -4 ) = 2$ ?

1 Answer

Mar 28, 2017

$x = 8$ $x=8$

Explanation:

If $\sqrt{x - 4} = 2$ $sqrt(x-4)=2$
then
$XXX x - 4 = 2^{2} = 4$ $color(white)("XXX")x-4=2^2=4$
and
$XXX x = 8$ $color(white)("XXX")x=8$

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