Question

(a+b)^3-(a-b)^3
factorise​

Answer 1

Answer:

[(a+b)^3= a^3+b^3+3ab(a+b)]---------1equation

[(a-b)^3= a^3-b^3-3ab(a-b)]------------2equation

a^3+b^3+3a^2×b+3ab^2-[a^3-b^3-3a^2×b+3ab^2]

a^3+b^3+3a^2×b+3ab^2-a^3+b^3+3a^2×b-3ab^2

= 2b^3+6a^2b