-12u-9=4u^2

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Solution for -12u-9=4u^2 equation: 



-12u-9=4u^2

We move all terms to the left:

-12u-9-(4u^2)=0

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

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