Question

a3-a2b-ab2-2b3/ a3+3a2b+3ab+2b3

Answer 1

(a+b)3=(a+b)*(a+b)*(a+b)
=(a2+ab+ab+b2)*(a+b)
=a3+a2b+a2b+ab2+a2b+ab2+ab2+b3
a3+3a2b+3ab2+b3

hope it helps u