Question

(a+b)³-(a-b)³ factorise it​

Answer 1

Step-by-step explanation:

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

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

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

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