5x2+3x-8=0

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Solution for 5x2+3x-8=0 equation:



5x^2+3x-8=0
a = 5; b = 3; c = -8;
Δ = b2-4ac
Δ = 32-4·5·(-8)
Δ = 169
The delta value is higher than zero, so the equation has two solutions
We use following formulas to calculate our solutions:
$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}$
$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}$

$\sqrt{\Delta}=\sqrt{169}=13$
$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(3)-13}{2*5}=\frac{-16}{10} =-1+3/5 $
$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(3)+13}{2*5}=\frac{10}{10} =1 $

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