What is the domain of y=x^2+x ?

The domain of y=x^2+x is -infinity <x<infinity

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domain of y=x^2+x

domain

y = x^{2} + x

- \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

f (x) = x - \frac{9}{x}

f (x) = \frac{20 - 4 x}{2}

\frac{( 2 x ^{2} + 2 x - 12 )}{( x ^{2} + 4 x - 5 )}

f (x) = lo g_{3} ((x + 2)^{2})

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