8w^2-26w+15=0

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Solution for 8w^2-26w+15=0 equation:



8w^2-26w+15=0
a = 8; b = -26; c = +15;
Δ = b2-4ac
Δ = -262-4·8·15
Δ = 196
The delta value is higher than zero, so the equation has two solutions
We use following formulas to calculate our solutions:
$w_{1}=\frac{-b-\sqrt{\Delta}}{2a}$
$w_{2}=\frac{-b+\sqrt{\Delta}}{2a}$

$\sqrt{\Delta}=\sqrt{196}=14$
$w_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(-26)-14}{2*8}=\frac{12}{16} =3/4 $
$w_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(-26)+14}{2*8}=\frac{40}{16} =2+1/2 $

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