Question

Tell me the answer is if mine is wrong

Answer 1

Answer:

it is correct

mark as brilliant

Answer 2

We can solve it and match the answer with options :

$(a + b)( {a}^{2} + {b}^{2} -a b) \\ \\ = > {a}^{3} + a {b}^{2} - {a}^{2} b + {a}^{2} b + {b}^{3} - a {b}^{2} \\ \\ = > {a}^{3} + a {b}^{2} - a {b}^{2} - {a}^{2} b + {a}^{2} b + {b}^{3} \\ \\ = > {a}^{3} + {b}^{3}$

Hence, the option (b) is correct ✔