Question 246130
{{{x+5/7x=8/13/(-7)}}}
{{{(7x^2 + 5)/7x = 8/(-91)}}}
{{{-91*(7x^2 + 5) = 56x}}}
{{{-91x^2 + 65 = 8x}}}
{{{91x^2 + 8x - 65 = 0}}}
*[invoke solve_quadratic_equation 91,8,-65]