计算题:(2x+y)(3x+2y)-(x-y)^2
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计算题:(2x+y)(3x+2y)-(x-y)^2计算题:(2x+y)(3x+2y)-(x-y)^2计算题:(2x+y)(3x+2y)-(x-y)^26x^+4xy+3xy+2y^-(x^+y^-2x
计算题:(2x+y)(3x+2y)-(x-y)^2
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计算题:(2x+y)(3x+2y)-(x-y)^2
6x^+4xy+3xy+2y^-(x^+y^-2xy)=6x^+7xy+2y^-x^-y^+2xy=5x^+9xy+y^
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