I think this is what you're talking about...[tex] \frac{4 x^{3}+5 x^{2} +3x }{x} [/tex] and if that's the case, the easiest way to do this is to split the numerator up into its 3 separate expressions and put each one over x and reduce each one individually. It would look like this: [tex] \frac{4 x^{3} }{x}+ \frac{5 x^{2} }{x}+ \frac{3x}{x} [/tex]. Then simplify the x's by reducing. The first expression reduces to [tex]4 x^{2} [/tex], the second one to 5x, and the last to 3. So your answer is [tex]4 x^{2} +5x+3[/tex]
