algebra
posted by babs .
Subtract (4a^3+3b^3)(2a^3+4a^2b_5ab^2+3b^3) is the answer 2a^3+4a^2b5ab^2

It would help if you proofread your questions before you posted them.
Is the underscore supposed to be a negative sign? If so, 5ab^2 will be positive.