如果x-y=2,xy=3,则x²y-xy²=几

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如果x-y=2,xy=3,则x²y-xy²=几如果x-y=2,xy=3,则x²y-xy²=几如果x-y=2,xy=3,则x²y-xy²=几

如果x-y=2,xy=3,则x²y-xy²=几
如果x-y=2,xy=3,则x²y-xy²=几

如果x-y=2,xy=3,则x²y-xy²=几