Question

$(x {}^{3} - x)$

Answer 1

Heya ! !
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$(x {}^{3} - x) = x(x {}^{2} - 1) \\ = x(x - 1)(x + 1) \\ = so \: the \: answer \: is \: x(x - 1)(x + 1)$

Answer 2

Here I s your answer
${x}^{3} - x \\ x( {x}^{2 } - 1) \\ x( {x}^{2} - {1}^{2) } \: \: using( {x}^{2} - {y}^{2 } = (x + y)(x - y) \: \: ) \\ \\ x(x + 1)(x - 1)$
Hope it helps you friend!!!