8(x²-2y²)-x(7x+y)+xy

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8(x²-2y²)-x(7x+y)+xy

8(x²-2y²)-x(7x+y)+xy
8(x²-2y²)-x(7x+y)+xy

8(x²-2y²)-x(7x+y)+xy
问题呢?化简么?