Question 20309
x^2 +x+5 =0
The Quadratic formula is

x ={-b^2 +/- sqrt(b^2 - 4ac)}/2a.

Here a=1, b=1, c=5.

x= {-1+/- sqrt ( 1-20)}/2
 ={-1 +/- isqrt(19))/2