x(x-36)=-324

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Solution for x(x-36)=-324 equation: 



x(x-36)=-324

We move all terms to the left:

x(x-36)-(-324)=0

We add all the numbers together, and all the variables

x(x-36)+324=0

We multiply parentheses

x^2-36x+324=0

a = 1; b = -36; c = +324;
Δ = b2-4ac
Δ = -362-4·1·324
Δ = 0
Delta is equal to zero, so there is only one solution to the equation

                              Stosujemy wzór:
$x=\frac{-b}{2a}=\frac{36}{2}=18$

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