Question 676372
The intersections with the x-axis are called the roots
Note that {{{ y = 0 }}} where the x-intersections are
If I call the 2 roots:
{{{ x = r[1] }}}
{{{ x = r[2] }}}
{{{ y = a*x^2 + b*x + c }}}
{{{ a*x^2 + b*x + c = 0 }}}
Using the quadratic formula:
1st point:
{{{x = (-b + sqrt( b^2-4*a*c ))/(2*a) }}}
{{{ y = 0 }}}
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2nd point:
{{{x = (-b - sqrt( b^2-4*a*c ))/(2*a) }}}
{{{ y = 0 }}}