What is the domain of (x^2+1)/(x^2-x-2) ?

The domain of (x^2+1)/(x^2-x-2) is x 2

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

domain

\frac{x ^{2} + 1}{x ^{2} - x - 2}

x < - 1 or - 1 < x < 2 or x > 2

Interval Notation

(- \infty, - 1) \cup (- 1, 2) \cup (2, \infty)

Solution steps

Find undefined (singularity) points:

x = 2, x = - 1

The function domain

x < - 1 or - 1 < x < 2 or x > 2

f (x) = x^{2} - 5 x - 24

f (x) = 2 x^{3} + x^{2} - 8 x + 3

x e^{\frac{2}{x}} + 1

\frac{2 x ^{2} + 7 x - 30}{2 x - 5}

f (x) = \frac{4}{x ^{2} - 4 x}

What is the domain of (x^2+1)/(x^2-x-2) ?
The domain of (x^2+1)/(x^2-x-2) is x<-1\lor-1<x<2\lor x>2