15x^2+30x+15=0

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Solution for 15x^2+30x+15=0 equation: 



15x^2+30x+15=0

a = 15; b = 30; c = +15;
Δ = b2-4ac
Δ = 302-4·15·15
Δ = 0
Delta is equal to zero, so there is only one solution to the equation

                              Stosujemy wzór:
$x=\frac{-b}{2a}=\frac{-30}{30}=-1$

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