(1)6x²-5y²+7y-4from8x²-5xy+9y²+6x-4y(subtract)
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Answer:
2x^2 + 14y^2 - 5xy-11y + 6x -4
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Answer:
[8x²-5xy+9y²+6x-4y] - [6x²-5y²+7y-4]
= 8x²-5xy+9y²+6x-4y - 6x² +5y² -7y +4
= 2x² + 14y² -5xy +6x -11y +4
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