Question

if a=2,b=-3,verify that (×+y)3=×3+y3+3×2y+3×y2​

Answer 1

Answer:As given a=2,b=-3

LHS is (x+y)^3=(2+(-3))^3=(-1)^3=-1

RHS is x^3+y^3+3x^2y+3xy^2

=2^3+(-3)^3+3×2^2×(-3)+3×2×(-3)^2

=8+(-27)-36+54=62-63=-1

As LHS=RHS (PROVED)

Step-by-step explanation: