x=x^2-60

Solution for x=x^2-60 equation:

x=x^2-60

We move all terms to the left:

x-(x^2-60)=0

We get rid of parentheses

-x^2+x+60=0

We add all the numbers together, and all the variables

-1x^2+x+60=0

a = -1; b = 1; c = +60;
Δ = b2-4ac
Δ = 12-4·(-1)·60
Δ = 241
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{241}}{2*-1}=\frac{-1-\sqrt{241}}{-2}
$
$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(1)+\sqrt{241}}{2*-1}=\frac{-1+\sqrt{241}}{-2}
$