若实数m,n满足|m-3|+(n+2)2=0,则m+2n的值为多少

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若实数m,n满足|m-3|+(n+2)2=0,则m+2n的值为多少
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若实数m,n满足|m-3|+(n+2)2=0,则m+2n的值为多少
若实数m,n满足|m-3|+(n+2)2=0,则m+2n的值为多少

若实数m,n满足|m-3|+(n+2)2=0,则m+2n的值为多少
|m-3|+(n+2)²=0
|m-3|=0,(n+2)²=0
m-3=0,n+2=0
m=3
n=-2
m+2n
=3+2*(-2)
=3-4
=-1

|m-3|+(n+2)2=0
m-3=0,n+2=0
m=3,n=-2
m+2n=-1