In the previous video, we have learned about **rational expressions**. In this video, we learn how to evaluate rational expressions . Watch the Tagalog math tutorial video above and then answer the exercises below. The complete video playlist of the Sipnayan tutorials on Rational Expressions can be found **here**.

**Practice Exercise**

Evaluate the following rational expressions.

1.) If x = -2, find the value of

2.) If y = 3, find the value of

.

3.) The function is a rational function. Find .

4.) If p = -4, q = 3, and r = 1, what is the value of

5.) If , what is the value of

Answers

1. 7/6

2. – 3/4

3. 5/7

4. – 22/5

5. 7/4

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