What is the domain of f(x)=(x+9)/(x^2-25) ?

The domain of f(x)=(x+9)/(x^2-25) is x 5

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domain of f(x)=(x+9)/(x^2-25)

domain

f (x) = \frac{x + 9}{x ^{2} - 25}

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

Solution steps

Find undefined (singularity) points:

x = 5, x = - 5

The function domain

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

f (x) = 3 x + 8

f (x) = \frac{x - 8}{4 x ^{2}}

\frac{\frac{1}{x}}{x ^{2} - 9}

f (x) = 3 x + 5 y = 15

What is the domain of f(x)=(x+9)/(x^2-25) ?
The domain of f(x)=(x+9)/(x^2-25) is x<-5\lor-5<x<5\lor x>5