Simplify 3x(7x)

$3 x \cdot (7 \cdot x)$

Step 1

Rewrite using the commutative property of multiplication.

$3 \cdot 7 x \cdot x$

Step 2

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

Move $x$ .

$3 \cdot 7 (x \cdot x)$

Multiply $x$ by $x$ .

$3 \cdot 7 x^{2}$

Step 3

Multiply $3$ by $7$ .

$21 x^{2}$

Simplify 3x*(7*x)