Find the domain of the expression. -x² + x³ + 8x Do they come out as real numbers?

OneAndOnly asked Feb 28, 2023

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24 votes

Find the domain of the expression.
-x² + x³ + 8x
Do they come out as real numbers?

OneAndOnly asked Feb 28, 2023

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15 votes

The domain of the expression is
$(-\infty, \infty)$ because the expression is a polynomial.

This is the same as the set of all real numbers.

Tom J Nowell answered Mar 6, 2023

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