x-8/x-3

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Solution for x-8/x-3 equation: 


D( x )

x = 0

x = 0

x = 0

x in (-oo:0) U (0:+oo)

x-(8/x)-3 = 0

x-8*x^-1-3 = 0

1*x^1-8*x^-1-3*x^0 = 0

(1*x^2-3*x^1-8*x^0)/(x^1) = 0 // * x^2

x^1*(1*x^2-3*x^1-8*x^0) = 0

x^1

x^2-3*x-8 = 0

x^2-3*x-8 = 0

DELTA = (-3)^2-(-8*1*4)

DELTA = 41

DELTA > 0

x = (41^(1/2)+3)/(1*2) or x = (3-41^(1/2))/(1*2)

x = (41^(1/2)+3)/2 or x = (3-41^(1/2))/2

x in { (3-41^(1/2))/2, (41^(1/2)+3)/2} 

x in { (3-41^(1/2))/2, (41^(1/2)+3)/2 }

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