Factorise by regrouping 100x³-x – InterviewSolution

1.

Factorise by regrouping 100x³-x

Answer»

$100x³-x \\ = x(100 {x}^{2} - 1) \\ = x( {10x)}^{2} - ( {1)}^{2} \\ = x(10x + 1)(10x - 1)$

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