A. Rational Expressions
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A. Rational Expressions
Rational expressions
are similar to Rational Numbers; the main difference is that Rational Numbers are fractions made up of integers, while rational expressions are fractions made up of
monomials and polynomials.
Some examples of rational expressions are:
Notice that given the definition of a rational expression, every polynomial is a rational expression with a denominator of one.
\[\frac{3x^2 - 4x}{2x},\thinspace \frac{7d^3}{9}, \thinspace \frac{25m^2 - 10mn + n^2}{5m - n}\]
Notice that given the definition of a rational expression, every polynomial is a rational expression with a denominator of one.
\[4x^2 - 9 = \frac{4x^2 - 9}{1}\]