(x^2)-4x-725=0

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Solution for (x^2)-4x-725=0 equation:



(x^2)-4x-725=0
a = 1; b = -4; c = -725;
Δ = b2-4ac
Δ = -42-4·1·(-725)
Δ = 2916
The delta value is higher than zero, so the equation has two solutions
We use following formulas to calculate our solutions:
$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}$
$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}$

$\sqrt{\Delta}=\sqrt{2916}=54$
$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(-4)-54}{2*1}=\frac{-50}{2} =-25 $
$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(-4)+54}{2*1}=\frac{58}{2} =29 $

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