Question

Add: -2pq + 7pqr -2pq -9qrp​

Answer 1

Answer:

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Answer 2

Step-by-step explanation:

$- 2pq + 7pqr - 2pq - 9pqr$

$= ( - 2 - 2)pq + (7 - 9)pqr$

$= - 4pq - 2pqr$

$= - 2pq(2 + r)$

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