已知(X-2Y-3)^3+|2X+Y-1|=0则3X-Y=
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已知(X-2Y-3)^3+|2X+Y-1|=0则3X-Y=
![已知(X-2Y-3)^3+|2X+Y-1|=0则3X-Y=](/uploads/image/z/19871327-47-7.jpg?t=%E5%B7%B2%E7%9F%A5%28X-2Y-3%29%5E3%2B%7C2X%2BY-1%7C%3D0%E5%88%993X-Y%3D)
(X-2Y-3)^3+|2X+Y-1|=0应该是)^2+|2X+Y-1|=0吧!
若吧3次方改成2次方就好算了.
X-2Y-3=0 2X+Y-1=0
所以X-2Y=3 2X+Y=1
两式相加得3X-Y=4
若吧3次方改成2次方就好算了.
X-2Y-3=0 2X+Y-1=0
所以X-2Y=3 2X+Y=1
两式相加得3X-Y=4
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