Simplify 3x*(3x)

$3 x \cdot (3 x)$

Step 1

Rewrite using the commutative property of multiplication.

$3 \cdot 3 x \cdot x$

Step 2

Multiply $x$ by $x$ by adding the exponents.

Move $x$ .

$3 \cdot 3 (x \cdot x)$

Multiply $x$ by $x$ .

$3 \cdot 3 x^{2}$

Step 3

Multiply $3$ by $3$ .

$9 x^{2}$