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Question

p3+ q3 = ?


A

(p + q)3

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B

(p + q)(p2 + q2 + p q)

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C

(p + q)(p2 + q2 – p q)

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D

p3 + q3 + 3pq

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Solution

The correct option is C

(p + q)(p2 + q2 – p q)


We know the cubic identity, p3+ q3 = (p + q)(p2 + q2 – p q)


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