Question

x^2+x-1=0 calculati x1 supra x2 +x2 supra x1! va roooooooooog

Answer 1

x²+x-1=0
a=1
b=1
c=-1
∆=b²-4ac
∆=1²-4*1*(-1)=1+4=5
x1,2=(-b±√∆)/2a=(-1±√5)/2
→x1=(-1+√5)/2
x2=(-1-√5)/2
x1/x2+x2/x1= [...rezolvarea vezi in poza...]