2p²q² - 3pq + 4 - 5 + 7pq - 3p²q²
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Answer:we have to add :
(2 p²q² - 3pq +4 ) and ( 5 + 7pq - 3 p²q²)
solution:-
(2 p²q² - 3pq +4 ) + ( 5 + 7pq - 3 p²q²)
=(2 p²q² - 3pq +4 + 5 + 7pq - 3 p²q²)
=(2 p²q² - 3 p²q²) + ( 7 pq - 3 pq ) + (4 + 5 )
= - p²q² + 4 pq +9 answer
Step-by-step explanation:
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