What is the domain of x/(x+1)+x^3 ?

The domain of x/(x+1)+x^3 is x -1

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domain of x/(x+1)+x^3

domain

\frac{x}{x + 1} + x^{3}

x < - 1 or x > - 1

Interval Notation

(- \infty, - 1) \cup (- 1, \infty)

Solution steps

Find undefined (singularity) points:

x = - 1

The function domain

x < - 1 or x > - 1

\frac{2}{x - 4}

f (x) = x^{3} - 9 x^{2} + 27 x - 5

- 2 x^{3} + 13 x^{2} - 17 x - 12

f (x) = \frac{1}{4} (x - 4)^{3}

f (x) = x^{2} - 8 x + 21