-11x2 + 2x = 10

That is a great answer asinus but I suspect it was not the intended question :)

$$\\-11x^2 + 2x = 10\\\\ -11x^2 + 2x -10 = 0\\\\ 11x^2 - 2x +10 = 0\\\\ \triangle = 4-4*11*10 <0\\\\ $This has no real roots because the discriminant is less than zero.$\\$It does have imaginary roots but I suspect you are not interested in those. :)$$ $

-11 x 2 + 2x = 10             [ + (-11 * 2)

2x = 10 + 22                    [ / 2

x = 32 / 2

x = 16

:- )

Gah! Asinus you beat me to it!