Question

30
Q.19 (a-b)(a^2 +ab+ b^2)=? *
2x
O (a+b)^3
3
a 3-6-3
+ 3
O a^3+b^3
+ a
RCI:
O (a+b)^3​

Answer 1

Answer:

ANSWER

(a+b)3+(a−b)3+6a(a2−b2)=(a3+3a2b+3ab2+b3)+(a3−3a2b+3ab2−b3)+(6a3−6ab2)

                                                                    =(2a3+6ab2)+(6a3−6ab2)

                                                                    =8a3