X(3x+2)=3x+2

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Solution for X(3x+2)=3x+2 equation:



X(3X+2)=3X+2
We move all terms to the left:
X(3X+2)-(3X+2)=0
We multiply parentheses
3X^2+2X-(3X+2)=0
We get rid of parentheses
3X^2+2X-3X-2=0
We add all the numbers together, and all the variables
3X^2-1X-2=0
a = 3; b = -1; c = -2;
Δ = b2-4ac
Δ = -12-4·3·(-2)
Δ = 25
The delta value is higher than zero, so the equation has two solutions
We use following formulas to calculate our solutions:
$X_{1}=\frac{-b-\sqrt{\Delta}}{2a}$
$X_{2}=\frac{-b+\sqrt{\Delta}}{2a}$

$\sqrt{\Delta}=\sqrt{25}=5$
$X_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(-1)-5}{2*3}=\frac{-4}{6} =-2/3 $
$X_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(-1)+5}{2*3}=\frac{6}{6} =1 $

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