3x2+26x+40=0

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Solution for 3x2+26x+40=0 equation:



3x^2+26x+40=0
a = 3; b = 26; c = +40;
Δ = b2-4ac
Δ = 262-4·3·40
Δ = 196
The delta value is higher than zero, so the equation has two solutions
We use following formulas to calculate our solutions:
$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}$
$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}$

$\sqrt{\Delta}=\sqrt{196}=14$
$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(26)-14}{2*3}=\frac{-40}{6} =-6+2/3 $
$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(26)+14}{2*3}=\frac{-12}{6} =-2 $

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