2x(3x-1)-2x=7x+3

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Solution for 2x(3x-1)-2x=7x+3 equation:



2x(3x-1)-2x=7x+3
We move all terms to the left:
2x(3x-1)-2x-(7x+3)=0
We add all the numbers together, and all the variables
-2x+2x(3x-1)-(7x+3)=0
We multiply parentheses
6x^2-2x-2x-(7x+3)=0
We get rid of parentheses
6x^2-2x-2x-7x-3=0
We add all the numbers together, and all the variables
6x^2-11x-3=0
a = 6; b = -11; c = -3;
Δ = b2-4ac
Δ = -112-4·6·(-3)
Δ = 193
The delta value is higher than zero, so the equation has two solutions
We use following formulas to calculate our solutions:
$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}$
$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}$

$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(-11)-\sqrt{193}}{2*6}=\frac{11-\sqrt{193}}{12} $
$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(-11)+\sqrt{193}}{2*6}=\frac{11+\sqrt{193}}{12} $

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