6x²y+2xy-3x²y²-7x-5yx-4y²x²-6x²y=

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6x²y+2xy-3x²y²-7x-5yx-4y²x²-6x²y=6x²y+2xy-3x²y²-7x-5yx-

6x²y+2xy-3x²y²-7x-5yx-4y²x²-6x²y=
6x²y+2xy-3x²y²-7x-5yx-4y²x²-6x²y=

6x²y+2xy-3x²y²-7x-5yx-4y²x²-6x²y=