8-(3x-2)x=-2

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Solution for 8-(3x-2)x=-2 equation:



8-(3x-2)x=-2
We move all terms to the left:
8-(3x-2)x-(-2)=0
We add all the numbers together, and all the variables
-(3x-2)x+10=0
We multiply parentheses
-3x^2+2x+10=0
a = -3; b = 2; c = +10;
Δ = b2-4ac
Δ = 22-4·(-3)·10
Δ = 124
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:
$\sqrt{\Delta}=\sqrt{124}=\sqrt{4*31}=\sqrt{4}*\sqrt{31}=2\sqrt{31}$
$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(2)-2\sqrt{31}}{2*-3}=\frac{-2-2\sqrt{31}}{-6} $
$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(2)+2\sqrt{31}}{2*-3}=\frac{-2+2\sqrt{31}}{-6} $

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