# Denay

Most popular questions and responses by Denay-
## Algebra

When solving a rational equation, why is it necessary to perform a check?

*asked on September 3, 2009* -
## Math117

Why is it important to simplify radical expressions before adding or subtracting? How is adding radical expressions similar to adding polynomial expressions? How is it different?

*asked on September 8, 2009* -
## 116 Algebra

Describe what the graph of interval [-4,10] looks like.

*asked on March 27, 2009*