What is the domain of r(x)=(x+9)/(x+3) ?

The domain of r(x)=(x+9)/(x+3) is x -3

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domain of r(x)=(x+9)/(x+3)

domain

r (x) = \frac{x + 9}{x + 3}

x < - 3 or x > - 3

Interval Notation

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

Solution steps

Find undefined (singularity) points:

x = - 3

The function domain

x < - 3 or x > - 3

f (x) = (x - 5)^{3}

2 x + 1, x < 0

f (x) = - 1 + 3 x + 5

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

What is the domain of r(x)=(x+9)/(x+3) ?
The domain of r(x)=(x+9)/(x+3) is x<-3\lor x>-3