Question 1

Remember: When adding and subtracting rational expressions, do you have to have a common denominator?

Accepted Answer

Yes

Answer

No

Question 2

Comprehend: When comparing the process of adding/subtracting rational expressions to multiplying/dividing rational expressions, what is one similarity?

Accepted Answer

They are similar to the process with regular fractions

Answer

All parts are the same

Answer

There are no similarities

Answer

They both require common denominators

Question 3

Apply/Predict: Where locations might you find the possible restrictions in a rational expression when adding and subtracting?

Accepted Answer

the denominator of your answer and the LCD

Answer

The denominator of your answer only

Answer

the LCD only

Question 4

Simplify the rational expression: $\frac{5x}{x^2 -9}-\frac{4x}{x^2 +5x+6}$

Accepted Answer

$\frac{x^2 +22x}{(x-3)(x+3)(x+2)}$

Answer

$\frac{7x}{(x-3)(x+3)(x+2)}$

Answer

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

Answer

$\frac{9x^2 -2x}{(x-3)(x+3)(x+2)}$

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