化简: 4xy²-3x²y-{3x²y+xy²-[2xy²-(4x
2个回答
4xy²-3x²y-{3x²y+xy²-[2xy²-(4x²y+y²x)]}
=4xy^2-3x^2y-3x^2y-xy^2+2xy^2-4x^2y-y^2x
=4xy^2-10x^2y
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