0=x^2-9x+2

Solution for 0=x^2-9x+2 equation:

0=x^2-9x+2

We move all terms to the left:

0-(x^2-9x+2)=0

We add all the numbers together, and all the variables

-(x^2-9x+2)=0

We get rid of parentheses

-x^2+9x-2=0

We add all the numbers together, and all the variables

-1x^2+9x-2=0

a = -1; b = 9; c = -2;
Δ = b2-4ac
Δ = 92-4·(-1)·(-2)
Δ = 73
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{-(9)-\sqrt{73}}{2*-1}=\frac{-9-\sqrt{73}}{-2}
$
$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(9)+\sqrt{73}}{2*-1}=\frac{-9+\sqrt{73}}{-2}
$