已知m²-4m+n²+6n+13=0.求m、n的值
问题描述:
已知m²-4m+n²+6n+13=0.求m、n的值
答
m²-4m+n²+6n+13=0
(m^2-4m+4)+(n^2+6n+9)=0
(m-2)^2+(n+3)^2=0
m-2=0,n+3=0
m=2,n=-3