What is the domain of f(x)=4x+2x^3+(x^2+2x) ?

The domain of f(x)=4x+2x^3+(x^2+2x) is -infinity <x<infinity

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domain of f(x)=4x+2x^3+(x^2+2x)

domain

f (x) = 4 x + 2 x^{3} + (x^{2} + 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) = \frac{x - 2}{x + 2}

\frac{2 x ^{3} + 11 x ^{2} + 5 x}{2 x ^{2} + x}

- 2 x^{2} + 40000

f (x) = - 6 x + 18

(x - 1) (x - 6)

What is the domain of f(x)=4x+2x^3+(x^2+2x) ?
The domain of f(x)=4x+2x^3+(x^2+2x) is -infinity <x<infinity