化简:-x^2y+4x^2y-3yx^2-7x^2y^2+|-8x^2y^2|=( )._数学解答

化简:-x^2y+4x^2y-3yx^2-7x^2y^2+|-8x^2y^2|=( ).

人气：430 ℃　时间：2019-10-24 06:26:38

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