Combining rational expression with unlike denominators

The video tutorial explains how to simplify and factor expressions to find the least common multiple (LCM) of unlike denominators. It covers the process of factoring trinomials, applying the distributive property, and determining constraints by setting the denominator equal to zero. The tutorial emphasizes the importance of simplification and checking for common factors before solving the problem.

What is the first step when trying to find the least common multiple of rational expressions?

• Multiply the numerators

• Simplify the expressions

• Divide the expressions

• Add the denominators

When determining the LCM of two expressions, what should you do if they share a common factor?

• Ignore the common factor

• Subtract the common factor

• Include the common factor only once

• Multiply the common factor by itself

How can you handle subtraction in rational expressions to simplify the process?

• Convert subtraction to division

• Convert subtraction to addition

• Ignore the subtraction

• Multiply by negative one

What method is used to find constraints or restrictions in rational expressions?

• Using the zero product property

• Adding the expressions

• Multiplying the expressions

• Setting the numerator equal to zero

What should you do if the numerator of a rational expression is non-factorable?

• Divide it by the denominator

• Add a constant to it

• Leave it as it is

• Multiply it by the denominator