Question

(i) (a + b)3 – a - b​

Answer 1

Answer:

(a+b)

3

−a−b

=(a+b)

3

−(a+b)

=(a+b)((a+b)

2

−1)

=(a+b)(a+b+1)(a+b−1

Answer 2

Answer:

(a + b)3 – a - b

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

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