What is the domain of (7/x)-(9/(x+9)) ?

The domain of (7/x)-(9/(x+9)) is x 0

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domain of (7/x)-(9/(x+9))

domain

(\frac{7}{x}) - (\frac{9}{x + 9})

x < - 9 or - 9 < x < 0 or x > 0

Solution steps

Find undefined (singularity) points:

x = 0, x = - 9

The function domain

x < - 9 or - 9 < x < 0 or x > 0

f (x) = \frac{5 x}{7 x - 1}

f (x) = \frac{5 x}{ln ( x ^{2} - 4 )}

f (x) = 1 + 5 + 6 x

e^{x + 1}

f (y) = x + 4 y = - 10

What is the domain of (7/x)-(9/(x+9)) ?
The domain of (7/x)-(9/(x+9)) is x<-9\lor-9<x<0\lor x>0