Question 975626
(a/2) [-b +/- sqrt (b^2-4ac)]

(1/2) * 3 +/- sqrt (9+20);   sqrt 29=5.385

(1/2) *(3+5.385)= (1/2) (8.385)= 4.20
(1/2) * (3-5.385)=(1/2)(-2.185)= - 1.10

{{{graph(300,200,-10,10,-10,10,x^2-3x-5)}}}