Answer :
I'm assuming that 2x2 is meant as 2x^2?
By foiling(first, outer, inner, last), you get 8x^3-14xy-28x+49y. There are no like terms to simplify.
By foiling(first, outer, inner, last), you get 8x^3-14xy-28x+49y. There are no like terms to simplify.