Question

What is the value for this algebraic expression (x + y)^3 ??

Answer 1

Answer:

(a + b)^3 = a^3 + b^3 + 3ab (a + b)

(a + b)^3 - 3ab (a + b) = a^3 + b^3

(a + b) {(a + b)^2 - 3ab} = a^3 + b^3

(a + b) {(a^2 + 2ab + b^2) - 3ab} = a^3 + b^3

(a +b) (a^2 - ab + b^2) = a^3 + b^3

Hope this will help you..