- A page of Class Notes regarding simplifying rational expressions, also viewed as fraction exponents. This topic is designed to be presented after the completion of certain Algebra 1 topics.-- Worksheet of practice (With detailed answer key). See "View Preview" to view this worksheet.**Note: For this topic, a modest to strong background knowledge of certain Algebra 1 and 2 concepts is already implied, such as the Laws of Exponents and basic knowledge of radicals (simplifying, index and radicand