Are you asking how to apply the quadratic equation? Google quadratic equation and check wikipedia.It has the form aV^2 + bV + c, where V is the variable.In equation 1., a=6b=-1c=-2in equation 6,solving for x in terms of y,a=8b=-10yc=-25y^2The solution is always the same. You just have to know what a, b, and c are.Solution
-b +/- SQRT(b^2-4ac))/2a