(-3x-6)(2x+4)=0

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Solution for (-3x-6)(2x+4)=0 equation: 



(-3x-6)(2x+4)=0

We multiply parentheses ..

(-6x^2-12x-12x-24)=0

We get rid of parentheses

-6x^2-12x-12x-24=0

We add all the numbers together, and all the variables

-6x^2-24x-24=0

a = -6; b = -24; c = -24;
Δ = b2-4ac
Δ = -242-4·(-6)·(-24)
Δ = 0
Delta is equal to zero, so there is only one solution to the equation

                              Stosujemy wzór:
$x=\frac{-b}{2a}=\frac{24}{-12}=-2$

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