What is the domain of x^2+x+3 ?

The domain of x^2+x+3 is -infinity <x<infinity

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domain of x^2+x+3

domain

x^{2} + x + 3

- \infty < x < \infty

Interval Notation

(- \infty, \infty)

Solution steps

The function has no undefined points nor domain constraints. Therefore, the domain is

- \infty < x < \infty

x^{2} - 9

y = - \frac{3}{4 x}

\frac{1}{x ^{2} - x - 6}

f (x) = 2 x - 1

f (x) = \frac{x + 4}{x + 2}