Question

已知m²+n²-6m+10n+34=0，求m+n的值

怎么做？？求完整答题过程

Answer 1

m²+n²-6m+10n+34=0
(m-3)²+(n+5)²=0

m-3=0
n+5=0
m=3
n=-5

m+n
=3-5
=-2

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Answer 2

m²+n²-6m+10n+34=0
(m-3)^2+(n+5)^2=0
m=3 and n=-5