Question

what is $pmsqrt{10000}$?

Explanation:

Step1: Recall square - root definition

The symbol $\pm\sqrt{x}$ means finding the positive and negative square - roots of $x$. We need to find a number $y$ such that $y^{2}=x$.

Step2: Calculate square - root of 10000

We know that $100\times100 = 10000$ and $(- 100)\times(-100)=10000$. So, $\pm\sqrt{10000}=\pm100$.

Answer:

$- 100$