-18p=p^2+81

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Solution for -18p=p^2+81 equation: 



-18p=p^2+81

We move all terms to the left:

-18p-(p^2+81)=0

We get rid of parentheses

-p^2-18p-81=0

We add all the numbers together, and all the variables

-1p^2-18p-81=0

a = -1; b = -18; c = -81;
Δ = b2-4ac
Δ = -182-4·(-1)·(-81)
Δ = 0
Delta is equal to zero, so there is only one solution to the equation

                              Stosujemy wzór:
$p=\frac{-b}{2a}=\frac{18}{-2}=-9$

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