x^2+6x-765=0

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Solution for x^2+6x-765=0 equation:



x^2+6x-765=0
a = 1; b = 6; c = -765;
Δ = b2-4ac
Δ = 62-4·1·(-765)
Δ = 3096
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:
$\sqrt{\Delta}=\sqrt{3096}=\sqrt{36*86}=\sqrt{36}*\sqrt{86}=6\sqrt{86}$
$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(6)-6\sqrt{86}}{2*1}=\frac{-6-6\sqrt{86}}{2} $
$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(6)+6\sqrt{86}}{2*1}=\frac{-6+6\sqrt{86}}{2} $

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