Question

How to solve this . Too much difficult

Answer 1

Answer:

$now \\ ({x}^{3} - 1) - (x - 1) \\ = x {}^{3 } - 1 - x + 1 \\ = x {}^{3} - x \\ = x (x {}^{2} - 1) \\ therefore \\ one \: of \: the \: factor \: is \: (x {}^{2} - 1). \\ hence \: the \: correct \: answer \: is \: (b).$

Please mark my answer as a brainleast.....