(x*x)-x=25

Solution for (x*x)-x=25 equation:

(x*x)-x=25

We move all terms to the left:

(x*x)-x-(25)=0

We add all the numbers together, and all the variables

(+x*x)-x-25=0

We add all the numbers together, and all the variables

-1x+(+x*x)-25=0

We get rid of parentheses

-1x+x*x-25=0

Wy multiply elements

x^2-1x-25=0

a = 1; b = -1; c = -25;
Δ = b2-4ac
Δ = -12-4·1·(-25)
Δ = 101
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{101}}{2*1}=\frac{1-\sqrt{101}}{2}
$
$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(-1)+\sqrt{101}}{2*1}=\frac{1+\sqrt{101}}{2}
$