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

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



-2(x-1)3x-1=-3
We move all terms to the left:
-2(x-1)3x-1-(-3)=0
We add all the numbers together, and all the variables
-2(x-1)3x+2=0
We multiply parentheses
-6x^2+6x+2=0
a = -6; b = 6; c = +2;
Δ = b2-4ac
Δ = 62-4·(-6)·2
Δ = 84
The delta value is higher than zero, so the equation has two solutions
We use following formulas to calculate our solutions:
$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}$
$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}$

The end solution:
$\sqrt{\Delta}=\sqrt{84}=\sqrt{4*21}=\sqrt{4}*\sqrt{21}=2\sqrt{21}$
$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(6)-2\sqrt{21}}{2*-6}=\frac{-6-2\sqrt{21}}{-12} $
$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(6)+2\sqrt{21}}{2*-6}=\frac{-6+2\sqrt{21}}{-12} $

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