Question 838983
Simplifying
-3(-3a)(6b)

Remove parenthesis around (-3a)
-3 * -3a(6b)

Remove parenthesis around (6b)
-3 * -3a * 6b

Reorder the terms for easier multiplication:
-3 * -3 * 6a * b

Multiply -3 * -3
9 * 6a * b

Multiply 9 * 6
54a * b

Multiply a * b
54ab