x2-(m2+n2-6n)x+m2+n2+2m-4n+1=0的两个实数根满足x1

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x2-(m2+n2-6n)x+m2+n2+2m-4n+1=0的两个实数根满足x1x2-(m2+n2-6n)x+m2+n2+2m-4n+1=0的两个实数根满足x1x2-(m2+n2-6n)x+m2+n2

x2-(m2+n2-6n)x+m2+n2+2m-4n+1=0的两个实数根满足x1
x2-(m2+n2-6n)x+m2+n2+2m-4n+1=0的两个实数根满足x1

x2-(m2+n2-6n)x+m2+n2+2m-4n+1=0的两个实数根满足x1
设f(x)=x^2-(m^2+n^2-6n)x+m^2+n^2+2m-4n+1
两个实数根满足x1