x2-8x+16=133

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Solution for x2-8x+16=133 equation:



x2-8x+16=133
We move all terms to the left:
x2-8x+16-(133)=0
We add all the numbers together, and all the variables
x^2-8x-117=0
a = 1; b = -8; c = -117;
Δ = b2-4ac
Δ = -82-4·1·(-117)
Δ = 532
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:
$\sqrt{\Delta}=\sqrt{532}=\sqrt{4*133}=\sqrt{4}*\sqrt{133}=2\sqrt{133}$
$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(-8)-2\sqrt{133}}{2*1}=\frac{8-2\sqrt{133}}{2} $
$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(-8)+2\sqrt{133}}{2*1}=\frac{8+2\sqrt{133}}{2} $

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