4x^2+5x-240=0

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Solution for 4x^2+5x-240=0 equation:



4x^2+5x-240=0
a = 4; b = 5; c = -240;
Δ = b2-4ac
Δ = 52-4·4·(-240)
Δ = 3865
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{-(5)-\sqrt{3865}}{2*4}=\frac{-5-\sqrt{3865}}{8} $
$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(5)+\sqrt{3865}}{2*4}=\frac{-5+\sqrt{3865}}{8} $

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