8x(sq) + 3x - 11 = 691 starting with x = 9 i have two options: 9.1 or 9.2? (closest to 691 through formula)
Using Quadratic Formula x = 9.1818 or - 9.556
Quadratic Formula:
\(x = {-b \pm \sqrt{b^2-4ac} \over 2a}\)
+36923 
