9y2-168y+784=0

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Solution for 9y2-168y+784=0 equation: 



9y^2-168y+784=0

a = 9; b = -168; c = +784;
Δ = b2-4ac
Δ = -1682-4·9·784
Δ = 0
Delta is equal to zero, so there is only one solution to the equation

                              Stosujemy wzór:
$y=\frac{-b}{2a}=\frac{168}{18}=9+1/3$

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