# Help on rational expressions with multiple term denominator

*label*Mathematics

*timer*Asked: Feb 18th, 2015

**Question description**

Ok, so I am completely stumped on rational expressions that have multiple terms in the denominator. Also, when they are very different. For instance, the one I'm working on right now has denominators of a-6, a(squared)-5a-6 and 5a+5. Even when factored out I understand the relationship between the first two, but how do I get the LCD to fit with the 5a-5?