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Byju's Answer
Standard VII
Mathematics
Multiplicative Identity
Multiply:7 p2...
Question
Multiply:
(7) (p
2
+ 2q) (7p
2
− pq − 11)
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Solution
(p
2
+ 2q) (7p
2
− pq − 11)
= p
2
(7p
2
− pq − 11) + 2q(7p
2
− pq − 11)
= (p
2
× 7p
2
) − (p
2
× pq) − (p
2
× 11) + (2q × 7p
2
) − (2q × pq) − (2q × 11)
= 7p
4
− p
3
q − 11p
2
+ 14p
2
q − 2pq
2
− 22q
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