4x2+81=36x

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Solution for 4x2+81=36x equation: 



4x^2+81=36x

We move all terms to the left:

4x^2+81-(36x)=0

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

                              Stosujemy wzór:
$x=\frac{-b}{2a}=\frac{36}{8}=4+1/2$

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