30x-25x2=9

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Solution for 30x-25x2=9 equation: 



30x-25x^2=9

We move all terms to the left:

30x-25x^2-(9)=0

a = -25; b = 30; c = -9;
Δ = b2-4ac
Δ = 302-4·(-25)·(-9)
Δ = 0
Delta is equal to zero, so there is only one solution to the equation

                              Stosujemy wzór:
$x=\frac{-b}{2a}=\frac{-30}{-50}=3/5$

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