3x2-31x+36=0

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Solution for 3x2-31x+36=0 equation:



3x^2-31x+36=0
a = 3; b = -31; c = +36;
Δ = b2-4ac
Δ = -312-4·3·36
Δ = 529
The delta value is higher than zero, so the equation has two solutions
We use following formulas to calculate our solutions:
$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}$
$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}$

$\sqrt{\Delta}=\sqrt{529}=23$
$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(-31)-23}{2*3}=\frac{8}{6} =1+1/3 $
$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(-31)+23}{2*3}=\frac{54}{6} =9 $

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