81v^2-126v+49=0

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Solution for 81v^2-126v+49=0 equation: 



81v^2-126v+49=0

a = 81; b = -126; c = +49;
Δ = b2-4ac
Δ = -1262-4·81·49
Δ = 0
Delta is equal to zero, so there is only one solution to the equation

                              Stosujemy wzór:
$v=\frac{-b}{2a}=\frac{126}{162}=7/9$

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