Intermediate Algebra
posted by rosa .
what is the meaning term rational expression Please give me an example how to divide rational expressions

Since this is not my area of expertise, I searched Google under the key words "rational expressions" to get this possible source:
http://tutorial.math.lamar.edu/Classes/Alg/RationalExpressions.aspx
In the future, you can find the information you desire more quickly, if you use appropriate key words to do your own search. Also see http://hanlib.sou.edu/searchtools/.