Question 323678
{{{0.19= x^2/(0.63-x)}}}
{{{0.19(0.63-x)= x^2}}}
{{{(0.1197-0.19x)= x^2}}}
{{{0= x^2+0.19x-0.1197}}}
*[invoke quadratic "x", 1, ".19", ".1197"]