Tick (✓) the correct answer
Question:

Tick (✓) the correct answer:

x3 − x = ?

(a) x(x2 − x)

(b) x(x − x2)

(c) x(1 + x)(1 − x)

(d) x(x + 1)(x − 1)

Solution:

(d) x(x + 1)(x − 1)

$x^{3}-x$

$=x\left(x^{2}-1\right)$

$=x(x-1)(x+1)$

 

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