Question 873666
y=x^2-x-23
y = (x - 1/2)^2 -1/4 - 23
y = (x - 1/2)^2 - 93/4  V(1/2, -93/4)
0 = (x - 1/2)^2 - 93/4 
{{{ 1/2 +-sqrt(93)/2) }}} = x