How to evaluate a limit with fraction in the numerator and denominator

The video tutorial explains how to handle complex fractions by finding and using the least common denominator (LCD). It demonstrates the process of multiplying both the numerator and denominator by the LCD to eliminate fractions, followed by simplifying the expression. The tutorial concludes with substituting values into the simplified expression.

Why is it not possible to plug zero into the equation initially?

• Because it makes the numerator zero

• Because it makes the denominator zero

• Because it makes the equation undefined

• Because it makes the equation negative

What is the purpose of finding the Least Common Denominator (LCD)?

• To eliminate denominators

• To multiply fractions

• To add fractions easily

• To divide fractions

What happens when you multiply the numerator and denominator by the LCD?

• The fractions become more complex

• The numerators become zero

• The equation becomes undefined

• The denominators divide out

Why is it important to ensure that denominators divide out correctly?

• To make the equation undefined

• To add more terms to the equation

• To make the equation more complex

• To ensure the equation is simplified correctly

What is the result of substituting zero into the simplified expression?

• 1/2

• -1/2

• 1/4

• -1/4