7y^2-2y-104=0

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Solution for 7y^2-2y-104=0 equation:



7y^2-2y-104=0
a = 7; b = -2; c = -104;
Δ = b2-4ac
Δ = -22-4·7·(-104)
Δ = 2916
The delta value is higher than zero, so the equation has two solutions
We use following formulas to calculate our solutions:
$y_{1}=\frac{-b-\sqrt{\Delta}}{2a}$
$y_{2}=\frac{-b+\sqrt{\Delta}}{2a}$

$\sqrt{\Delta}=\sqrt{2916}=54$
$y_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(-2)-54}{2*7}=\frac{-52}{14} =-3+5/7 $
$y_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(-2)+54}{2*7}=\frac{56}{14} =4 $

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