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Question

Subtract 7p(3q+7p) from 8p(2p7q).


A
(33p2+77pq)
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B
(43p267pq)
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C
(43p267pq)
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D
(33p277pq)
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Solution

The correct option is D (33p277pq)
Subtract 7p(3q + 7p) from 8p(2p - 7q)
=8p(2p7q)7p(3q+7p)
=(8p×2p8p×7q)(7p×3q+7p×7p)
=(16p256pq)(21pq+49p2)
Grouping the like terms together,
=(16p249p2)+(56pq21pq)
=33p277pq

Mathematics

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