15x^2+24x+4=0

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Solution for 15x^2+24x+4=0 equation:



15x^2+24x+4=0
a = 15; b = 24; c = +4;
Δ = b2-4ac
Δ = 242-4·15·4
Δ = 336
The delta value is higher than zero, so the equation has two solutions
We use following formulas to calculate our solutions:
$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}$
$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}$

The end solution:
$\sqrt{\Delta}=\sqrt{336}=\sqrt{16*21}=\sqrt{16}*\sqrt{21}=4\sqrt{21}$
$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(24)-4\sqrt{21}}{2*15}=\frac{-24-4\sqrt{21}}{30} $
$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(24)+4\sqrt{21}}{2*15}=\frac{-24+4\sqrt{21}}{30} $

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