What is the domain of f(x)= 1/(x^2+2x-15) ?

The domain of f(x)= 1/(x^2+2x-15) is x 3

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domain of f(x)= 1/(x^2+2x-15)

domain

f (x) = \frac{1}{x ^{2} + 2 x - 15}

x < - 5 or - 5 < x < 3 or x > 3

Interval Notation

(- \infty, - 5) \cup (- 5, 3) \cup (3, \infty)

Solution steps

Find undefined (singularity) points:

x = 3, x = - 5

The function domain

x < - 5 or - 5 < x < 3 or x > 3

f (x) = \frac{x ^{2} + 15 x + 54}{x + 6}

f (x) = \frac{6}{- x + 3}

f (x) = 4 - 7 x^{2}

\frac{( x + 4 )}{x ^{2} - 9}

f (x) = y^{2} = x + 9

What is the domain of f(x)= 1/(x^2+2x-15) ?
The domain of f(x)= 1/(x^2+2x-15) is x<-5\lor-5<x<3\lor x>3