8y^2-56y+80=0

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Solution for 8y^2-56y+80=0 equation:



8y^2-56y+80=0
a = 8; b = -56; c = +80;
Δ = b2-4ac
Δ = -562-4·8·80
Δ = 576
The delta value is higher than zero, so the equation has two solutions
We use following formulas to calculate our solutions:
$y_{1}=\frac{-b-\sqrt{\Delta}}{2a}$
$y_{2}=\frac{-b+\sqrt{\Delta}}{2a}$

$\sqrt{\Delta}=\sqrt{576}=24$
$y_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(-56)-24}{2*8}=\frac{32}{16} =2 $
$y_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(-56)+24}{2*8}=\frac{80}{16} =5 $

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