add the following
5x² + 3x - 8, 4x + 7-2x², 6- 5x + 4x²
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Step-by-step explanation:
7xsquare + 2x + 7 of following question
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5x²+3x-8
-2x²+4x+7
_______
3x²+7x-1
+4x²-5x+6
________
7x²+2x+5
______
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