Răspunsuri

2014-04-30T17:13:49+03:00
Folosom relatia lui Viete
x²-Sx+P=0
S=Xunu+Xdoi
S=1-√2+1+√2=2
P=Xunu·Xdoi
P=(1-√2)(1+√2)=1-2=-1
x²-2x-1=0
2014-04-30T17:14:01+03:00