Determine the values for which a rational expression is undefinedEvaluate rational expressionsSimplify rational expressionsSimplify rational expressions with opposite factors

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In Chapter 1, we reviewed the properties of fractions and their operations. We introduced rational numbers, which are just fractions where the numerators and denominators are integers, and the denominator is not zero.

In this chapter, we will work with fractions whose numerators and denominators are polynomials. We call these rational expressions.

A rational expression is an expression of the form        Evaluate    Simplify. This rational expression is undefined for x = 2.    for each value:ⓐ Simplify. when Simplify. when Simplify. The expression is undefined.

Evaluate Simplify using the Equivalent Fractions Property. is simplified because there are no more common factors.

Simplify: Simplify using the Equivalent Fractions Property.

See more: Convert Grams Per Centimeter Cubed To Kilograms Per Meter Cubed  would be like cancelling the 2’s in the fraction Recognize that Simplify: Recognize the factors that are opposites. Simplify: , where p and q are polynomials and Previous: Introduction