2=3x^2+11x-2

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Solution for 2=3x^2+11x-2 equation:



2=3x^2+11x-2
We move all terms to the left:
2-(3x^2+11x-2)=0
We get rid of parentheses
-3x^2-11x+2+2=0
We add all the numbers together, and all the variables
-3x^2-11x+4=0
a = -3; b = -11; c = +4;
Δ = b2-4ac
Δ = -112-4·(-3)·4
Δ = 169
The delta value is higher than zero, so the equation has two solutions
We use following formulas to calculate our solutions:
$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}$
$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}$

$\sqrt{\Delta}=\sqrt{169}=13$
$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(-11)-13}{2*-3}=\frac{-2}{-6} =1/3 $
$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(-11)+13}{2*-3}=\frac{24}{-6} =-4 $

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