3x2+15x-5=0

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Solution for 3x2+15x-5=0 equation:



3x^2+15x-5=0
a = 3; b = 15; c = -5;
Δ = b2-4ac
Δ = 152-4·3·(-5)
Δ = 285
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{-(15)-\sqrt{285}}{2*3}=\frac{-15-\sqrt{285}}{6} $
$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(15)+\sqrt{285}}{2*3}=\frac{-15+\sqrt{285}}{6} $

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