Question

what equations do you use for special products other than foil

Answer 1

I think there's no other than foil

Answer 2

no, there is equations to change the answers with or something like that

Answer 3

Give us an example of what you are trying to do. :)

Answer 4

if there is a number after a letter, it is a power to that number
(x2-8x-1)(2x2 - 4x +9)

Answer 5

In that case, you will have to foil. I had thought you would post something of the form \((a+b)^n\). In that case,\[(a+b)^n=\sum_{k=0}^{n}\binom{n}{k}a^{n-k}b^k.\]But that one is special.