x^2+13.4x-13.4=0

Solution for x^2+13.4x-13.4=0 equation:

x^2+13.4x-13.4=0

a = 1; b = 13.4; c = -13.4;
Δ = b2-4ac
Δ = 13.42-4·1·(-13.4)
Δ = 233.16
The delta value is higher than zero, so the equation has two solutions
We use following formulas to calculate our solutions:
$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}$
$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}$

$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(13.4)-\sqrt{233.16}}{2*1}=\frac{-13.4-\sqrt{233.16}}{2}
$
$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(13.4)+\sqrt{233.16}}{2*1}=\frac{-13.4+\sqrt{233.16}}{2}
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