Question

what is $-sqrt{100}$?

Explanation:

Step1: Recall square - root definition

The square root of 100, $\sqrt{100}$, is 10 since $10\times10 = 100$.

Step2: Consider the negative sign

We have $-\sqrt{100}$, so we take the negative of the square - root of 100.

Answer:

$- 10$