# How do you simplify 3sqrtx * 3sqrtx?

Apr 24, 2016

The answer is $9 x$.

#### Explanation:

$3 \cdot 3 \cdot \sqrt{x} \cdot \sqrt{x}$

Simplify.

$9 \cdot \sqrt{x} \cdot \sqrt{x}$

Simplify $\sqrt{x} \cdot \sqrt{x}$ to $\sqrt{{x}^{2}}$

$9 x \sqrt{{x}^{2}}$

Apply the square root rule $\sqrt{{m}^{2}} = m$.

$\sqrt{{x}^{2}} = x$

Simplify.

$9 x \sqrt{{x}^{2}} =$

$9 x$