Question 835686
If you mean a circle, then you really want this:
{{{x^2 + y^2 - 12x + 5y + 19 = 0}}}.


If you want x intercepts, then y=0:
{{{x^2+0-12x+0+19=0}}}
{{{x^2-12x+19=0}}}
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Discriminant is {{{144-4(19)=144-76=68=4*17}}}
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{{{x=(12+- sqrt(4*17))/(2)}}}
{{{x=(12+- 2*sqrt(17))/2}}}
{{{highlight(x=6+- sqrt(17))}}}