25t2+30t+9=0

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Solution for 25t2+30t+9=0 equation: 



25t^2+30t+9=0

a = 25; b = 30; c = +9;
Δ = b2-4ac
Δ = 302-4·25·9
Δ = 0
Delta is equal to zero, so there is only one solution to the equation

                              Stosujemy wzór:
$t=\frac{-b}{2a}=\frac{-30}{50}=-3/5$

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