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In your own words, what are rational expressions? Why must we always be mindful of the final value of the denominator in a rational expression?

In your own words, what are rational expressions? Why must we always be mindful of the final value of the denominator in a rational expression? For example, consider the rational expression 3x/(x2 – 16). What values in the denominator must we be mindful of? Explain why.

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540073_MATH_solution.doc

A rational expression is nothing more than a fraction in which the numerator and/or the
denominator are polynomials.
Or
A rational expression is an algebraic expression of the form P/Q, where P and...

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