Question

what is $sqrt{4}$?

Explanation:

Step1: Recall square - root definition

The square - root of a number $x$, denoted as $\sqrt{x}$, is a value $y$ such that $y^2=x$. We need to find $y$ for $x = 4$.

Step2: Find the value

We know that $2\times2=4$, so $\sqrt{4}=2$.

Answer:

2