Simplify (-3a^2c)(-3b^2c)

$(- 3 a^{2} c) (- 3 b^{2} c)$

Multiply $c$ by $c$ by adding the exponents.

Move $c$ .

$- 3 a^{2} (c \cdot c) (- 3 b^{2})$

Multiply $c$ by $c$ .

$- 3 a^{2} c^{2} (- 3 b^{2})$

Multiply $- 3$ by $- 3$ .

$9 a^{2} c^{2} b^{2}$