2(x+y)^2-(2x+y)(x-2y)(2y-x)^2,其中x=-2,y=-1/22
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2(x+y)^2-(2x+y)(x-2y)(2y-x)^2,其中x=-2,y=-1/22
2(x+y)^2-(2x+y)(x-2y)(2y-x)^2,其中x=-2,y=-1/22
2(x+y)^2-(2x+y)(x-2y)(2y-x)^2,其中x=-2,y=-1/22
-(8487 / 1331)
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