x^2+2x-4/3=0

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Solution for x^2+2x-4/3=0 equation:



x^2+2x-4/3=0
We multiply all the terms by the denominator
x^2*3+2x*3-4=0
Wy multiply elements
3x^2+6x-4=0
a = 3; b = 6; c = -4;
Δ = b2-4ac
Δ = 62-4·3·(-4)
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*3}=\frac{-6-2\sqrt{21}}{6} $
$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(6)+2\sqrt{21}}{2*3}=\frac{-6+2\sqrt{21}}{6} $

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