X2+5x+6=x+2

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Solution for X2+5x+6=x+2 equation: 



X2+5X+6=X+2

We move all terms to the left:

X2+5X+6-(X+2)=0

We add all the numbers together, and all the variables

X^2+5X-(X+2)+6=0

We get rid of parentheses

X^2+5X-X-2+6=0

We add all the numbers together, and all the variables

X^2+4X+4=0

a = 1; b = 4; c = +4;
Δ = b2-4ac
Δ = 42-4·1·4
Δ = 0
Delta is equal to zero, so there is only one solution to the equation

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

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