(3x²-2x+5xy-7) from (8-9xy+3x²-5x)
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Step-by-step explanation:
(8-9xy+3x^2-5x)-(3x^2-2x+5xy-7)
=8-9xy+3x^2-5x-3x^2+2x-5xy+7
= -14xy-3x+15
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