###### Alissa Fong

MA, Stanford University
Teaching in the San Francisco Bay Area

Alissa is currently a teacher in the San Francisco Bay Area and Brightstorm users love her clear, concise explanations of tough concepts

##### Thank you for watching the video.

To unlock all 5,300 videos, start your free trial.

# Simplifying Rational Functions with Factoring and GCFs - Problem 12

Alissa Fong
###### Alissa Fong

MA, Stanford University
Teaching in the San Francisco Bay Area

Alissa is currently a teacher in the San Francisco Bay Area and Brightstorm users love her clear, concise explanations of tough concepts

Share

You have been practicing factoring top and bottom of a fraction and crossing out common factors to simplify a rational expression. What happens if the entire top (or bottom) gets crossed out?? You need to replace it with 1. This is particularly important if your numerator crosses out entirely- you need to make sure there is a one on top of whatever is left to show that it is still in the bottom of a fraction.

Transcript Coming Soon!