Question

prove the formula (a+b)whole cube​

Answer 1

Answer:- (A+B)(A+B)(A+B)

We know that (A+B)^2=A^2+2AB+B^2,. now, A(A^2+2AB+B^2)+B(A^2+2AB+B^2)= A^3+ 2A^2B+ AB^2+A^2B+ 2AB^2+ B^3= A^3 + B^3+ 3AB^2+3A^2B