Question 282540
There are some problems with your wording.
x^2-x=0
x*(x-1)=0
the two roots are x=0 and x=1
that is where the parabola crosses the x axis
(0,0) and (1,0)
 x intercept is when y =zero the zeroes or roots of the equation
y intercept is when x=0 

Nothing cuts the y intercept. Perhaps you want to know the y intercept where x=0 or where it cuts(crosses) the y axis.
1/2^2-1/2
1/4-1/2=-1/4
*[invoke quadratic "x", 1, -1, 0 ]