9x2-24x+20-4=0

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Solution for 9x2-24x+20-4=0 equation: 



9x^2-24x+20-4=0

We add all the numbers together, and all the variables

9x^2-24x+16=0

a = 9; b = -24; c = +16;
Δ = b2-4ac
Δ = -242-4·9·16
Δ = 0
Delta is equal to zero, so there is only one solution to the equation

                              Stosujemy wzór:
$x=\frac{-b}{2a}=\frac{24}{18}=1+1/3$

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