Simplify 3x*(4x)

$3 x \cdot (4 x)$

Step 1

Rewrite using the commutative property of multiplication.

$3 \cdot 4 x \cdot x$

Step 2

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

Move $x$ .

$3 \cdot 4 (x \cdot x)$

Multiply $x$ by $x$ .

$3 \cdot 4 x^{2}$

Step 3

Multiply $3$ by $4$ .

$12 x^{2}$