### Home > CCA2 > Chapter Ch6 > Lesson 6.2.4 > Problem6-145

6-145.

This problem is a checkpoint for adding and subtracting rational expressions. It will be referred to as Checkpoint 6B.

Add or subtract each pair of rational expressions. Simplify the result.

1. $\frac { 4 } { x ^ { 2 } + 5 x + 6 } + \frac { 2 x } { x + 2 }$

2. $\frac { 3 x ^ { 2 } + x } { ( 2 x + 1 ) ^ { 2 } } - \frac { 3 } { 2 x + 1 }$

Check your answers by referring to the Checkpoint 6B materials located at the back of your book.

Ideally, at this point you are comfortable working with these types of problems and can solve them correctly. If you feel that you need more confidence when solving these types of problems, then review the Checkpoint 6B materials and try the practice problems provided. From this point on, you will be expected to do problems like these correctly and with confidence.

Answers and extra practice for the Checkpoint problems are located in the back of your printed textbook or in the Reference Tab of your eBook. If you have an eBook for CCA2, login and then click the following link: Checkpoint 6B: Adding and Subtracting Rational Expressions