5x^2+28x+36=0

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Solution for 5x^2+28x+36=0 equation:



5x^2+28x+36=0
a = 5; b = 28; c = +36;
Δ = b2-4ac
Δ = 282-4·5·36
Δ = 64
The delta value is higher than zero, so the equation has two solutions
We use following formulas to calculate our solutions:
$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}$
$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}$

$\sqrt{\Delta}=\sqrt{64}=8$
$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(28)-8}{2*5}=\frac{-36}{10} =-3+3/5 $
$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(28)+8}{2*5}=\frac{-20}{10} =-2 $

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