化简:-x^2y+4x^2y-3yx^2-7x^2y^2+|-8x^2y^2|=( ).
化简:-x^2y+4x^2y-3yx^2-7x^2y^2+|-8x^2y^2|=( ).
数学人气:784 ℃时间:2019-10-24 06:26:38
优质解答
-x^2y+4x^2y-3yx^2-7x^2y^2+|-8x^2y^2|=-x²y+4x²y-3x²y-7x²y²+8x²y²=(-x²y+4x²y-3x²y)+(8x²y²-7x²y²)=x²y²
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