4c-c^2=4

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Solution for 4c-c^2=4 equation: 



4c-c^2=4

We move all terms to the left:

4c-c^2-(4)=0

We add all the numbers together, and all the variables

-1c^2+4c-4=0

a = -1; b = 4; c = -4;
Δ = b2-4ac
Δ = 42-4·(-1)·(-4)
Δ = 0
Delta is equal to zero, so there is only one solution to the equation

                              Stosujemy wzór:
$c=\frac{-b}{2a}=\frac{-4}{-2}=+2$

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