|Y-2|+(X-1)平方=0
而|Y-2|>=0;(X-1)平方>=0
所以只能等于0,即y=2,x=1
x立方-x平方y+xy平方+x平方y-xy平方-y立方=1-2+4+2-4-8=-7
若/Y-2/+(X-1)平方=0,求代数式x立方-x平方y+xy平方+x平方y-xy平方-y立方的值
若/Y-2/+(X-1)平方=0,求代数式x立方-x平方y+xy平方+x平方y-xy平方-y立方的值
数学人气：344 ℃时间：2020-04-25 21:45:47
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