(x^2-x+1)/(x-2)

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Solution for (x^2-x+1)/(x-2) equation: 


D( x )

x-2 = 0

x-2 = 0

x-2 = 0

x-2 = 0 // + 2

x = 2

x in (-oo:2) U (2:+oo)

(x^2-x+1)/(x-2) = 0

x^2-x+1 = 0

x^2-x+1 = 0

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

DELTA = -3

DELTA < 0

1 = 0

1/(x-2) = 0

x belongs to the empty set

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