x(x+12)=-36

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Solution for x(x+12)=-36 equation: 



x(x+12)=-36

We move all terms to the left:

x(x+12)-(-36)=0

We add all the numbers together, and all the variables

x(x+12)+36=0

We multiply parentheses

x^2+12x+36=0

a = 1; b = 12; c = +36;
Δ = b2-4ac
Δ = 122-4·1·36
Δ = 0
Delta is equal to zero, so there is only one solution to the equation

                              Stosujemy wzór:
$x=\frac{-b}{2a}=\frac{-12}{2}=-6$

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