若(x+3)^2+丨Y-2丨=0,则2x+3y=
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若(x+3)^2+丨Y-2丨=0,则2x+3y=若(x+3)^2+丨Y-2丨=0,则2x+3y=若(x+3)^2+丨Y-2丨=0,则2x+3y=因为(x+3)^2>=0且|y-2|>=0这两个式子的和
若(x+3)^2+丨Y-2丨=0,则2x+3y=
若(x+3)^2+丨Y-2丨=0,则2x+3y=
若(x+3)^2+丨Y-2丨=0,则2x+3y=
因为(x+3)^2>=0 且|y-2|>=0
这两个式子的和=0
所以x+3=y-2=0
x=-3 y=2
所以2x+3y=-6+6=0
两非负数的和为0,则两非负数均为0,即x+3=0,y-2=0,解之得x=-3,y=2,所以2x+3y=2×(-3)+3×2=-6+6=0
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