Algebra Examples

$\sqrt{15 - 2 \cdot 3}$

Step 1

Multiply $- 2$ by $3$ .

$\sqrt{15 - 6}$

Step 2

Subtract $6$ from $15$ .

$\sqrt{9}$

Step 3

Rewrite $9$ as $3^{2}$ .

$\sqrt{3^{2}}$

Step 4

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

$3$