Factorise completely.
$25 x^{3} - x$

x(x + 1)(25x - 1)

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x(5x + 1)(5x - 1)

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5x(25x + 1)(x - 1)

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None of these

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Solution

The correct option is B x(5x + 1)(5x - 1)
$F a c t o r i z i n g 25 x^{3} - x, = x ({(5 x)}^{2} - (1)^{2}) = x (5 x + 1) (5 x - 1)$ \\

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