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Add: 7x+2y³-4xy,3x-2xy³+7xy and 2xy-5x+6y³
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Add: 7x+2y³-4xy,3x-2xy³+7xy and 2xy-5x+6y³

User Muhammet Demir
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\\ \sf\longmapsto 7x + 2y {}^(3) - 4xy + 3x - 2xy {}^(3) + 7xy + 2xy - 5x + {6y}^(3) \\ \\ \sf\longmapsto 2y {}^(3) + 6 {y}^(3) - 2xy {}^(3 ) + 7x + 3x - 5x - 4xy + 7xy + 2xy \\ \\ \sf\longmapsto 8y {}^(3) - 2xy {}^(3) + 5x + 5xy \\ \\ \sf\longmapsto 2y {}^(3) (4 - x) + 5x(1 + y)

User Chris Dowdeswell
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