Question 303907
{{{(4x^3-15x^2-6x)/3x}}}
{{{3x((4/3)x^2-5x-2)/3x}}}
{{{cross(3x)((4/3)x^2-5x-2)/cross(3x)}}}
{{{((4/3)x^2-5x-2)}}}
*[invoke quadratic "x", 1.333333, -5, -2]