x^2-x-45=9000

Solution for x^2-x-45=9000 equation:

x^2-x-45=9000

We move all terms to the left:

x^2-x-45-(9000)=0

We add all the numbers together, and all the variables

x^2-1x-9045=0

a = 1; b = -1; c = -9045;
Δ = b2-4ac
Δ = -12-4·1·(-9045)
Δ = 36181
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{-(-1)-\sqrt{36181}}{2*1}=\frac{1-\sqrt{36181}}{2}
$
$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(-1)+\sqrt{36181}}{2*1}=\frac{1+\sqrt{36181}}{2}
$