class 8 maths chapter 9 exercise 9.1 question number 3 sub number 3 explanation
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Step-by-step explanation:
iii) 2p²q² – 3pq + 4, 5 + 7pq – 3p²q²
= (2p²q² – 3pq + 4) + (5 + 7pq – 3p²q²)
= 2p²q² – 3p²q² – 3pq + 7pq + 4 + 5
= – p²q² + 4pq + 9
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