4x2+1=-4x

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Solution for 4x2+1=-4x equation: 



4x^2+1=-4x

We move all terms to the left:

4x^2+1-(-4x)=0

We get rid of parentheses

4x^2+4x+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:
$x=\frac{-b}{2a}=\frac{-4}{8}=-1/2$

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