1/2(x-y)²=3(x-y)²-1/4(x-y)²,合并同类项

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1/2(x-y)²=3(x-y)²-1/4(x-y)²,合并同类项
1/2(x-y)²=3(x-y)²-1/4(x-y)²,合并同类项

1/2(x-y)²=3(x-y)²-1/4(x-y)²,合并同类项
9/4(x-y)^2=0