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Question

By inspection, a3 - 2a2 + a - 2 gives


A

(a2 + 1) (a + 2)

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B

(a - 2) (a2 + 1)

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C

(a - 2) (a2 - 1)

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D

a(a2 - 2a + 1)

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Solution

The correct option is B

(a - 2) (a2 + 1)


a3 - 2a2 + a - 2 = a2 (a - 2) + (a - 2)

= (a2 + 1) (a - 2)


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