-6x=x^2-x+2

Solution for -6x=x^2-x+2 equation:

-6x=x^2-x+2

We move all terms to the left:

-6x-(x^2-x+2)=0

We get rid of parentheses

-x^2-6x+x-2=0

We add all the numbers together, and all the variables

-1x^2-5x-2=0

a = -1; b = -5; c = -2;
Δ = b2-4ac
Δ = -52-4·(-1)·(-2)
Δ = 17
The delta value is higher than zero, so the equation has two solutions
We use following formulas to calculate our solutions:
$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}$
$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}$

$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(-5)-\sqrt{17}}{2*-1}=\frac{5-\sqrt{17}}{-2}
$
$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(-5)+\sqrt{17}}{2*-1}=\frac{5+\sqrt{17}}{-2}
$