Add:3p2q2-4pq+5,10p2q2+3,15 +9pq+ 7p2q2
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Answer : 20p²q² + 5pq + 23
Step-by-step explanation:
Add by column method,
+3p²q² - 4 pq + 5
+10p²q² - 0 pq + 3
+7p²q² +9pq +15
-----------------------------
20p²q² + 5pq + 23
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