36n=-81n^2-4

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Solution for 36n=-81n^2-4 equation: 



36n=-81n^2-4

We move all terms to the left:

36n-(-81n^2-4)=0

We get rid of parentheses

81n^2+36n+4=0

a = 81; b = 36; c = +4;
Δ = b2-4ac
Δ = 362-4·81·4
Δ = 0
Delta is equal to zero, so there is only one solution to the equation

                              Stosujemy wzór:
$n=\frac{-b}{2a}=\frac{-36}{162}=-2/9$

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