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Question

Question 82 (vi)

Subtract

7p(3q + 7p) from 8p(2p - 7q)


Solution

We have, 7p (3q + 7p) and 8p(2p - 7q)
The  required difference is given by 8p(2p -7q) -7p(3q + 7p)
=16p256pq21pq49p2=(16p249p2)+(56pq21pq)
                                                             [grouping like terms]
=33p277 pq

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