计算：4xy²-3x²y-{3x²y-[2xy²-4x²y+2(x²y_数学解答

计算：4xy²-3x²y-{3x²y-[2xy²-4x²y+2(x²y-2xy²)]
急

人气：274 ℃　时间：2020-06-10 20:13:20

解答

4xy²-3x²y-{3x²y-[2xy²-4x²y+2(x²y-2xy²)]}=4xy²-3x²y-3x²y+[2xy²-4x²y+2(x²y-2xy²)】=4xy²-6x²y+2xy²-4x²y+2(x²...