Răspunsuri

2014-08-27T23:26:00+03:00
Distanta dintre doua puncte se calculeaza cu 
rad (x2-x1)^2+(y2-y1)^2

Rad ((m-2)^2+(2-m)^2)=4
Adica rad(m^2-4m+4+4+m^2-4m)=4
2m^2-8m+8=16
2m^2-8m-8m=0
2(m^2-4m-4)=0
m^2-4m-4=0
Delta=32
x1=2+rad2
x2=2-rad2