Operations with Rational Expressions QUIZ

To add, subtract, multiply, or divide rational expressions, you should first do what (if it is possible)?

• Perform the given operation

• Factor the numerators and denominators

• Find the value that makes it undefined

• Flip the second expression around

True or False?

When you multiply and divide rational expressions, you must first find a common denominator.

• True

• False

To add or subtract rational expressions we must have a _____________

• greatest common factor

• common denominator

• calculator

• proportion

Simplify.

• $\frac{x+6}{x+4}$

• (x+6)(x+4)

• (x+6)

• $\frac{\left(x+6\right)}{\left(x-5\right)}$

Simplify.

• $\frac{1}{n-7}$

• n-7

• $\frac{n-6}{n-7}$

• n-6

Simplify.

• A. $\frac{x+7}{x+4}$

• B. -3/4

• C. $\frac{x+3}{x+4}$

• D. $\frac{x+3}{x-4}$

Simplify

• $\frac{\left(x+9\right)}{\left(x-9\right)}$

• $\frac{1}{x-9}$

• (x+9)

• $\frac{1}{x+9}$

Subtract.

• 
• 
• 
• 

Simplify.
 $\frac{\left(x^2-49\right)}{\left(x^2+9x+14\right)}$  

•  $\frac{x-7}{x+2}$  

•  $\frac{x+7}{x+2}$  

•  $\frac{x-7}{x-2}$ 

•  $\frac{x+7}{x+2}$  

Add.

• A

• B

• C

• D