Question

please answer to these questions fast ​

Answer 1

Answer:

(a+b)(a+b)(a+b) + (a-b)(a-b)(a-b)

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

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

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

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

2a^3+0+2ab^2+0+4ab^2+0

2a^3+6ab^2