Algebra 1 Lesson #45 How to Find the LCD for a Group of Rational Expressions

In this lesson, we will learn how to find the least common denominator or LCD for a group of rational expressions. This process is very similar to finding the LCD for a group of fractions. We will first factor each denominator completely. Then we will build a list that contains each prime factor raised to it's highest power among all the factorizations. The LCD is the product of the list.