add 5x² + 7y - 8 + 4x² + 5y - 6
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9x² + 12y - 14
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Answer:
9x²+12y+2
Step-by-step explanation:
attachment is give above where
+5x²+7y-8
+4x²+5y-6
+9x²+12y+2
Attachments:

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