What is the domain of (-2x+4)/(x^2-9) ?

The domain of (-2x+4)/(x^2-9) is x 3

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domain of (-2x+4)/(x^2-9)

domain

\frac{- 2 x + 4}{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

f (x) = 5 x - 3 f (x) = \frac{9 x ^{2} - 4}{3 x + 2}

f (x) = x^{2} + 4 x - 12

g (x) = \frac{x + 7}{x ^{2} - 49}

f (x) = lo g_{\frac{1}{4}} (x^{2} - 4 x + 4)

5 - 2 x^{2}

What is the domain of (-2x+4)/(x^2-9) ?
The domain of (-2x+4)/(x^2-9) is x<-3\lor-3<x<3\lor x>3