## Thinking Mathematically (6th Edition)

The square root of $n$, represented by $\underline{\sqrt{n}}$, is the nonnegative number that when multiplied by itself gives $\underline{n}$.
The square root of $n$, represented by $\underline{\sqrt{n}}$, is the nonnegative number that when multiplied to itself gives $\underline{n}$. $\sqrt n*\sqrt n=n$