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Algebra

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Moderate

Simplify Difference of Cubes

ALGEBR-4KGRMW

Simplify the following rational expression:

$$\frac{x^{3} - 1}{x - 1}$$

A

$x^{2} + x + 1$

B

$x^{2} -x + 1$

C

$x^{2} -x - 1$

D

$1 - x - x^{2}$