What is the domain of f(x)=(3x^2+5x-6)/(x^2-9) ?

The domain of f(x)=(3x^2+5x-6)/(x^2-9) is x 3

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domain of f(x)=(3x^2+5x-6)/(x^2-9)

domain

f (x) = \frac{3 x ^{2} + 5 x - 6}{x ^{2} - 9}

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

Interval Notation

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

Solution steps

Find undefined (singularity) points:

x = 3, x = - 3

The function domain

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

\frac{4}{x ^{2} - 9}

y = tan (3 x)

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

y = 2 x^{2} + 4 x - 6

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

What is the domain of f(x)=(3x^2+5x-6)/(x^2-9) ?
The domain of f(x)=(3x^2+5x-6)/(x^2-9) is x<-3\lor-3<x<3\lor x>3