4t2+12t+9=0

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Solution for 4t2+12t+9=0 equation: 



4t^2+12t+9=0

a = 4; b = 12; c = +9;
Δ = b2-4ac
Δ = 122-4·4·9
Δ = 0
Delta is equal to zero, so there is only one solution to the equation

                              Stosujemy wzór:
$t=\frac{-b}{2a}=\frac{-12}{8}=-1+1/2$

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