Question

Summation of (alpha +beta)^3=

Answer 1

Wkt, (x+y)^3 = x^3 + x^3y + xy^3 + y ^3

Therefore , (alpha+beta)^3

= (alpha)^3 + (alpha)^3(beta) + (alpha)

(beta)^3 + (beta)^3

= alpha^3 + alpha^3beta + alpha

beta ^3 + beta ^3