What is the domain of 1/(x^2-2x-8) ?

The domain of 1/(x^2-2x-8) is x 4

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domain of 1/(x^2-2x-8)

domain

\frac{1}{x ^{2} - 2 x - 8}

x < - 2 or - 2 < x < 4 or x > 4

Interval Notation

(- \infty, - 2) \cup (- 2, 4) \cup (4, \infty)

Solution steps

Find undefined (singularity) points:

x = 4, x = - 2

The function domain

x < - 2 or - 2 < x < 4 or x > 4

x + 6 y = 7

f (x) = (120 - 6 w) w^{2}

\frac{4 - x}{x ^{2} - 3 x}

y = cos (3 x)

x - 1

What is the domain of 1/(x^2-2x-8) ?
The domain of 1/(x^2-2x-8) is x<-2\lor-2<x<4\lor x>4