# REX01 Introduction to Rational Expressions

In this video, we learn the definition of rational numbers, rational expressions, and rational functions . 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**

True or False

1.) The fraction is a rational number.

2.) The fraction is a rational expression.

3.) The fraction is a rational expression.

4.) The function is a rational function.

5.) The fraction is a rational number.

Answers

1.False. The numerator and denominator of a rational number must be integers.

2. True

3. False. is not a polynomial expression.

4. True

5. True

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