Pre-Algebra Examples

$\sqrt{1 + 16 + 64}$

Step 1

Add $1$ and $16$ .

$\sqrt{17 + 64}$

Step 2

Add $17$ and $64$ .

$\sqrt{81}$

Step 3

Rewrite $81$ as $9^{2}$ .

$\sqrt{9^{2}}$

Step 4

Pull terms out from under the radical, assuming positive real numbers.

$9$