21pq + 49 p² from 16p² - 56
pq
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hope this helps
Step-by-step explanation:
16p²-56pq-(21pq + 49 p²)
16p²- 56pq- 21pq - 49 p²
16p²-49p² -56pq -21pq ( after arranging like terms)
-33p² - 77 pq (ans)
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