How do you simplify $sqrt(-125)$ ?

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Answer 1 · 2015-07-18T08:52:04

$=color(blue)(5isqrt5$

$sqrt(-125) = sqrt(-1 *5*5*5)$

$sqrt(-1)= i$ the imaginary unit

So,
$sqrt(-125) = isqrt( 5*5*5)$

$=color(blue)(5isqrt5$

How do you simplify sqrt(-125)sqrt(-125)?