What is the domain of x^2-20 ?

The domain of x^2-20 is -infinity <x<infinity

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domain of x^2-20

domain

x^{2} - 20

- \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

sec (x) - tan (x)

g (x) = \frac{5 x}{x ^{2} - 32}

f (x) = 4 x - 6, x = 1

g (x) = 4 x^{2} + 3 x - 2

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