2450=x^2-x

Solution for 2450=x^2-x equation:

2450=x^2-x

We move all terms to the left:

2450-(x^2-x)=0

We get rid of parentheses

-x^2+x+2450=0

We add all the numbers together, and all the variables

-1x^2+x+2450=0

a = -1; b = 1; c = +2450;
Δ = b2-4ac
Δ = 12-4·(-1)·2450
Δ = 9801
The delta value is higher than zero, so the equation has two solutions
We use following formulas to calculate our solutions:
$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}$
$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}$

$\sqrt{\Delta}=\sqrt{9801}=99$
$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(1)-99}{2*-1}=\frac{-100}{-2}
=+50
$
$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(1)+99}{2*-1}=\frac{98}{-2}
=-49
$