10x2-10x-2=0

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Solution for 10x2-10x-2=0 equation:



10x^2-10x-2=0
a = 10; b = -10; c = -2;
Δ = b2-4ac
Δ = -102-4·10·(-2)
Δ = 180
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:
$\sqrt{\Delta}=\sqrt{180}=\sqrt{36*5}=\sqrt{36}*\sqrt{5}=6\sqrt{5}$
$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(-10)-6\sqrt{5}}{2*10}=\frac{10-6\sqrt{5}}{20} $
$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(-10)+6\sqrt{5}}{2*10}=\frac{10+6\sqrt{5}}{20} $

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