(x-2)x=96

Solution for (x-2)x=96 equation:

(x-2)x=96

We move all terms to the left:

(x-2)x-(96)=0

We multiply parentheses

x^2-2x-96=0

a = 1; b = -2; c = -96;
Δ = b2-4ac
Δ = -22-4·1·(-96)
Δ = 388
The delta value is higher than zero, so the equation has two solutions
We use following formulas to calculate our solutions:
$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}$
$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}$

The end solution:

$\sqrt{\Delta}=\sqrt{388}=\sqrt{4*97}=\sqrt{4}*\sqrt{97}=2\sqrt{97}$
$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(-2)-2\sqrt{97}}{2*1}=\frac{2-2\sqrt{97}}{2}
$
$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(-2)+2\sqrt{97}}{2*1}=\frac{2+2\sqrt{97}}{2}
$