3x^2-x-25.5=0

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Solution for 3x^2-x-25.5=0 equation:



3x^2-x-25.5=0
We add all the numbers together, and all the variables
3x^2-1x-25.5=0
a = 3; b = -1; c = -25.5;
Δ = b2-4ac
Δ = -12-4·3·(-25.5)
Δ = 307
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{-(-1)-\sqrt{307}}{2*3}=\frac{1-\sqrt{307}}{6} $
$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(-1)+\sqrt{307}}{2*3}=\frac{1+\sqrt{307}}{6} $

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