14y^2-13y-42=0

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Solution for 14y^2-13y-42=0 equation:



14y^2-13y-42=0
a = 14; b = -13; c = -42;
Δ = b2-4ac
Δ = -132-4·14·(-42)
Δ = 2521
The delta value is higher than zero, so the equation has two solutions
We use following formulas to calculate our solutions:
$y_{1}=\frac{-b-\sqrt{\Delta}}{2a}$
$y_{2}=\frac{-b+\sqrt{\Delta}}{2a}$

$y_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(-13)-\sqrt{2521}}{2*14}=\frac{13-\sqrt{2521}}{28} $
$y_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(-13)+\sqrt{2521}}{2*14}=\frac{13+\sqrt{2521}}{28} $

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