If you would like to simplify 2a^2b^3 (4a^2 + 3ab^2 - ab), you can do this using the following steps:
2a^2b^3 (4a^2 + 3ab^2 - ab) = 2a^2b^3 4a^2 + 2a^2b^3 3ab^2 - 2a^2b^3 * ab = 8a^4b^3 + 6a^3b^5 - 2a^3b^4
The correct result would be d. 8a^4b^3 + 6a^3b^5 - 2a^3b^4.
