已知|x-y+3|+(2x+y)^2=0,求4x+3y的值 已知|x-y+3|+(2x+y)^2=0,求4x+3y的值
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已知|x-y+3|+(2x+y)^2=0,求4x+3y的值 已知|x-y+3|+(2x+y)^2=0,求4x+3y的值
1.已知|x-y-1|+(x+y)^2=0,求2x+3y的值
2.已知|x-y+3|+(2x+y)^2=0,求4x+3y的值
急
1.已知|x-y-1|+(x+y)^2=0,求2x+3y的值
2.已知|x-y+3|+(2x+y)^2=0,求4x+3y的值
急
![已知|x-y+3|+(2x+y)^2=0,求4x+3y的值 已知|x-y+3|+(2x+y)^2=0,求4x+3y的值](/uploads/image/z/8285496-24-6.jpg?t=%E5%B7%B2%E7%9F%A5%7Cx-y%2B3%7C%2B%282x%2By%29%5E2%3D0%2C%E6%B1%824x%2B3y%E7%9A%84%E5%80%BC+%E5%B7%B2%E7%9F%A5%7Cx-y%2B3%7C%2B%282x%2By%29%5E2%3D0%2C%E6%B1%824x%2B3y%E7%9A%84%E5%80%BC)
1.x-y-1=0,x+y=0,x=1/2,y=-1/2,2x+3y=1-3/2=-1/2.
2.x-y+3=0,2x+y=0.x=-1,y=2.4x+3y=-4+6=2.
2.x-y+3=0,2x+y=0.x=-1,y=2.4x+3y=-4+6=2.
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