Sangeetha Pulapaka

STEP 1: What are polynomials

STEP 2: What are fractions

STEP 2: What is an expression

STEP 3: What is a rational expression

 A rational expression is nothing more than a fraction in which the numerator and/or the denominator are polynomials. Here are some examples of rational expressions.

STEP 4: Answer

3x^{2} + 1 is  a rational expression, since this can be written as

\frac{3x^{2}+ 1}{1}