Question

a^3+b^3= (a+b)^3-3ab(a+b) kindly proof it​

Answer 1

Answer:

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

a^3+b^3=a^3+b^3+3×a×b(a+b)-3ab(a+b)

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

a^3+b^3=a^3+b^3

hence proved