Question from vincent, a student:

How do you factor

the ( ) are exponents

4b4b(3)+ a(2)b - 4a - ab(4)

I still don't understand if there is no a in 4b4b

Vincent,

I think there is a typo in this problem. I think it should be

4b^{3}+ a^{2}b - 4a - ab^{4}

Can you factor it now? Penny