5x^2+25x-9=0

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Solution for 5x^2+25x-9=0 equation:



5x^2+25x-9=0
a = 5; b = 25; c = -9;
Δ = b2-4ac
Δ = 252-4·5·(-9)
Δ = 805
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{-(25)-\sqrt{805}}{2*5}=\frac{-25-\sqrt{805}}{10} $
$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(25)+\sqrt{805}}{2*5}=\frac{-25+\sqrt{805}}{10} $

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