Question

Multiply and simplify: –3ab3 • (–4a4b5)
A. -12a^5b^8
B. -12a^4b^15
C.12a^5b^8
D. 12a^4b^15

Answer 1

Multiply -3ab^3 by each term
-3ab^3*-4a^4b^5
-3*-4 =12
12a^5b^8

Answer 2

a negative times a negative is positive
when you multiply number or variables with the same base add the exponents