Question 377918
I'm assuming you're asking whether k>0, k=0, or k<0.


x2 + 20x + 100
Your equation for discriminant is {{{b^2-4ac}}}
So,
{{{b^2-4ac}}}
={{{(20)^2-4(1)(100)}}}
=400-400
=0


Since the discriminant is 0, k=0.
This means that the equation has one real root.