0=4x2+12x+9

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Solution for 0=4x2+12x+9 equation: 



0=4x^2+12x+9

We move all terms to the left:

0-(4x^2+12x+9)=0

We add all the numbers together, and all the variables

-(4x^2+12x+9)=0

We get rid of parentheses

-4x^2-12x-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:
$x=\frac{-b}{2a}=\frac{12}{-8}=-1+1/2$

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