Y=4x-4x^2-1

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Solution for Y=4x-4x^2-1 equation: 



=4Y-4Y^2-1

We move all terms to the left:

-(4Y-4Y^2-1)=0

We get rid of parentheses

4Y^2-4Y+1=0

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

                              Stosujemy wzór:
$Y=\frac{-b}{2a}=\frac{4}{8}=1/2$

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