Question

Rezolvati ecuatia x^2+2x-35=0

Answer 1

x^2+2x-35=0
Coeficientii:
A=1
B=2
C=-35
Δ=b^2-4ac=2^2-4*1*(-35)=4+140=144
Δ>0
x=(-b+/-√Δ)/2a
2a=2
-b=-2
√Δ=12
x1=(2+12)/2=7
x2=(2-12)/2=-5
S={7;-5}