## 內容簡介

內容簡介 To help students succeed in learning math at school or at home, Summit Math books start with simple, foundational concepts and build on those ideas in small steps. Written by a math teacher with 16+ years of classroom experience, this series is designed to help students learn at different paces. Each book is split into 2 parts: 1) Guided Discovery Scenarios, and 2) Homework and Extra Practice Scenarios. The Guided Discovery Scenarios gradually develop new concepts, building on previously learned topics. The Homework and Extra Practice Scenarios improve your understanding and increase your ability to retain what you have learned. Each part has a separate Answer Key, which is included to promote learning. When you finish each scenario, you can check the Answer Key to see if you are ready to move on or if you need more guidance. Book description: In this book, you will learn how to manipulate a rational expression by multiplying it by a disguised form of 1. You will use this skill to do the following operations with rational expressions: addition, subtraction, multiplication and division. You will then learn how to solve rational equations by identifying common denominators and eliminating the fractions. Near the end of the book, you will learn that some equations have extraneous solutions. This book builds on Algebra 1: Book 5 and Algebra 2: Book 3. Book 4 Contents: Introduction to rational expressionsUsing a disguised form of 1Simplifying rational expressionsMultiplying rational expressionsDividing rational expressionsAdding and subtracting rational expressionsEquations with rational expressionsExtraneous solutionsCumulative ReviewAnswer Key