What is the domain for X³+2X²-9X-18
any number I plug into the expression will return some real number, so
the domain is the set of real numbers
To find the domain of the function f(x) = X³ + 2X² - 9X - 18, we need to determine all the possible values that x can take without resulting in any mathematical inconsistencies.
In general, polynomials have a domain that includes all real numbers. This means that for any value of x, the function is defined and will produce a real number output.
Therefore, the domain of the function f(x) = X³ + 2X² - 9X - 18 is all real numbers.