Question

simplify the expression:
$-2 - sqrt{-16}$

Explanation:

Step1: Rewrite sqrt of negative number

$\sqrt{-16} = \sqrt{16 \times (-1)} = \sqrt{16} \times \sqrt{-1} = 4i$

Step2: Substitute back to expression

$-2 - \sqrt{-16} = -2 - 4i$

Answer:

$-2 - 4i$