Simplify 2a^2b^3 (4a^2 + 3ab^2 - ab) =? a. 8a^4b^4 + 6a^3b^5 + 1a^3b^4b. 8a^4b^5 + 3a^3b^5 - 2a^3b^4c. 8a^4b^5 + 3a^3b^5 + 2a^3b^4d. 8a^4b^3 + 6a^3b^5 - 2a^3b^4

The correct answer is D.D. 8a^4b^3 + 6a^3b^5 - 2a^3b^4

You can tell this by the lead term alone. When you mutliply the term outside to the lead term, D is the only one that has that term.

2a^2b^3*4a^2 = 8a^4b^3

D. 8a^4b^3 + 6a^3b^5 - 2a^3b^4