作业帮[(y-2x)(-2x-y)-4(x-2y)²]*2y,其中x=1,y=2
来源：学生作业帮助网 编辑：作业帮 时间：2024/11/24 18:33:47
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[(y-2x)(-2x-y)-4(x-2y)²]*2y,其中x=1,y=2
[(y-2x)(-2x-y)-4(x-2y)²]*2y,其中x=1,y=2
[(y-2x)(-2x-y)-4(x-2y)²]*2y,其中x=1,y=2
x)(-2x-y)-4(x-2y)²]*2y,其