2x*x+2+6x+12=6-2x

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Solution for 2x*x+2+6x+12=6-2x equation: 



2x*x+2+6x+12=6-2x

We move all terms to the left:

2x*x+2+6x+12-(6-2x)=0

We add all the numbers together, and all the variables

2x*x+6x-(-2x+6)+2+12=0

We add all the numbers together, and all the variables

6x+2x*x-(-2x+6)+14=0

Wy multiply elements

2x^2+6x-(-2x+6)+14=0

We get rid of parentheses

2x^2+6x+2x-6+14=0

We add all the numbers together, and all the variables

2x^2+8x+8=0

a = 2; b = 8; c = +8;
Δ = b2-4ac
Δ = 82-4·2·8
Δ = 0
Delta is equal to zero, so there is only one solution to the equation

                              Stosujemy wzór:
$x=\frac{-b}{2a}=\frac{-8}{4}=-2$

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