x=(A^2-A)/2

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Solution for x=(A^2-A)/2 equation: 



x=(^2-)/2

We move all terms to the left:

x-((^2-)/2)=0

We multiply all the terms by the denominator


x*2)-((^2-)=0

Wy multiply elements

2x^2=0

a = 2; b = 0; c = 0;
Δ = b2-4ac
Δ = 02-4·2·0
Δ = 0
Delta is equal to zero, so there is only one solution to the equation

                              Stosujemy wzór:
$x=\frac{-b}{2a}=\frac{0}{4}=0$

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