Question

evaluate the following. click on
ot a real number\ if applicable. \\(\sqrt{-49} = -7\\) \\(-\sqrt{4} = \square\\)

Explanation:

Step1: Evaluate square root of 4

$\sqrt{4} = 2$

Step2: Apply negative sign

$-\sqrt{4} = -2$

Step3: Check first expression validity

$\sqrt{-49}$ has no real solution, as square roots of negative numbers are not real numbers.

Answer:

$\sqrt{-49}$ = Not a real number
$-\sqrt{4} = -2$