<PRE><B>Question 625</B>
&lt;b&gt;&gt;&gt;what is the domain of f(x) = x&lt;sup&gt;4&lt;/sup&gt;-5x&lt;sup&gt;3&lt;/sup&gt;+x&lt;sup&gt;2&lt;/sup&gt;-x-2&lt;&lt;
`
When an algebraic equation contains no denominators or even root radicals
containing variables, the domain is always &quot;all real numbers&quot;, which is 
written in set builder notation as:
`
{x|x is a real number}
`
or in interval notation as

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