What is the domain of (1-5x)/(4+x) ?

The domain of (1-5x)/(4+x) is x -4

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domain of (1-5x)/(4+x)

domain

\frac{1 - 5 x}{4 + x}

x < - 4 or x > - 4

Interval Notation

(- \infty, - 4) \cup (- 4, \infty)

Solution steps

Find undefined (singularity) points:

x = - 4

The function domain

x < - 4 or x > - 4

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

f (x) = x + 8

f (x) = 0.05 x + 20 + \frac{125}{x}

y = 1. 5^{x} + 4

f (x) = - 3 x + 6

What is the domain of (1-5x)/(4+x) ?
The domain of (1-5x)/(4+x) is x<-4\lor x>-4