X^2+6x-381=0

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Solution for X^2+6x-381=0 equation:



X^2+6X-381=0
a = 1; b = 6; c = -381;
Δ = b2-4ac
Δ = 62-4·1·(-381)
Δ = 1560
The delta value is higher than zero, so the equation has two solutions
We use following formulas to calculate our solutions:
$X_{1}=\frac{-b-\sqrt{\Delta}}{2a}$
$X_{2}=\frac{-b+\sqrt{\Delta}}{2a}$

The end solution:
$\sqrt{\Delta}=\sqrt{1560}=\sqrt{4*390}=\sqrt{4}*\sqrt{390}=2\sqrt{390}$
$X_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(6)-2\sqrt{390}}{2*1}=\frac{-6-2\sqrt{390}}{2} $
$X_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(6)+2\sqrt{390}}{2*1}=\frac{-6+2\sqrt{390}}{2} $

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