How do you simplify the square root $+-sqrt(16/49)$ ?

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Answer 1 · 2016-11-03T09:37:19

Please see the explanation.

$16 = 4^2$ and $49 = 7^2$

$:.$

$+-sqrt(16/49) = +-sqrt(4^2/7^2) = +-4/7$

How do you simplify the square root +-sqrt(16/49)+-sqrt(16/49)?