-m^2-6m-1=8

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Solution for -m^2-6m-1=8 equation: 



-m^2-6m-1=8

We move all terms to the left:

-m^2-6m-1-(8)=0

We add all the numbers together, and all the variables

-1m^2-6m-9=0

a = -1; b = -6; c = -9;
Δ = b2-4ac
Δ = -62-4·(-1)·(-9)
Δ = 0
Delta is equal to zero, so there is only one solution to the equation

                              Stosujemy wzór:
$m=\frac{-b}{2a}=\frac{6}{-2}=-3$

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