5x2+35x+30=0

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Solution for 5x2+35x+30=0 equation:



5x^2+35x+30=0
a = 5; b = 35; c = +30;
Δ = b2-4ac
Δ = 352-4·5·30
Δ = 625
The delta value is higher than zero, so the equation has two solutions
We use following formulas to calculate our solutions:
$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}$
$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}$

$\sqrt{\Delta}=\sqrt{625}=25$
$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(35)-25}{2*5}=\frac{-60}{10} =-6 $
$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(35)+25}{2*5}=\frac{-10}{10} =-1 $

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