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Question

Factorization of 64a3343b3 is:


A

(4a – 7b) (16a2 + 49b2 + 28ab)

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B

(4a + 7b) (16a2 - 49b2 + 28ab)

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C

(4a – 7b) (16a2 + 49b2 - 28ab)

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D

(4a + 7b) (16a2 + 49b2 + 28ab)

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Solution

The correct option is A

(4a – 7b) (16a2 + 49b2 + 28ab)


64a3343b3=(4a)3(7b)3

We know that x3y3 = (xy)(x2+xy+y2)

(4a)3(7b)3=(4a7b)[(4a)2+(7b)(4a)+(7b)2]

=(4a7b)(16a2+49b2+28ab)


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