###### 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.

# Multiplying and Dividing Rationals - Problem 8

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

When the +, - signs of factors are extremely close and you think something should cross out, you could be looking at opposite sign binomials. They are the same binomial except for one has been multiplied by -1. If you factor out the negative 1 and possibly re-arrange the terms to make the factors more clearly the same, they can be canceled from top and bottom of a fraction. Be extremely precise with the +, - signs, though- it is very easy to make a mistake on these!

Transcript Coming Soon!