Learn math, science, English SAT & ACT from
highquaility study
videos by expert teachers
Thank you for watching the preview.
To unlock all 5,300 videos, start your free trial.
Simplifying Rational Functions with Factoring and GCFs  Problem 5
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
We can reduce fractions when there is a common factor on top and bottom. Essentially, this represents multiplying by 1, so we can "cancel" out common terms. Be careful, though you can cross out common factors only, which means the terms have to be being multiplied by something. If they are being added or subtracted to something, then they're not factors and not "eligible" for being crossed out. Here, we look for greatest common factors that happen to be monomials, and then cross out common factors on top and bottom. Lastly, we look at a way to check your work using substitution.
Transcript Coming Soon!
Please enter your name.
Are you sure you want to delete this comment?
Alissa Fong
M.A. in Secondary Mathematics, Stanford University
B.S., Stanford University
Alissa has a quirky sense of humor and a relatable personality that make it easy for students to pay attention and understand the material. She has all the math tips and tricks students are looking for.
Sample Problems (15)
Need help with a problem?
Watch expert teachers solve similar problems.

Simplifying Rational Functions with Factoring and GCFs
Problem 1 6,160 viewsSimplify and find any excluded values.
4x³ 16x 
Simplifying Rational Functions with Factoring and GCFs
Problem 2 5,658 viewsSimplify and find any excluded values.
18x³ 6x + 12 
Simplifying Rational Functions with Factoring and GCFs
Problem 3 4,992 viewsSimplify and find any excluded values.
8m + 16 2m² + 5m + 2 
Simplifying Rational Functions with Factoring and GCFs
Problem 4 4,599 viewsSimplify and find any excluded values.
9 − 3x 3x² − 9 − 6x 
Simplifying Rational Functions with Factoring and GCFs
Problem 5 742 views 
Simplifying Rational Functions with Factoring and GCFs
Problem 6 710 views 
Simplifying Rational Functions with Factoring and GCFs
Problem 7 670 views 
Simplifying Rational Functions with Factoring and GCFs
Problem 8 722 views 
Simplifying Rational Functions with Factoring and GCFs
Problem 9 592 views 
Simplifying Rational Functions with Factoring and GCFs
Problem 10 666 views 
Simplifying Rational Functions with Factoring and GCFs
Problem 11 774 views 
Simplifying Rational Functions with Factoring and GCFs
Problem 12 614 views 
Simplifying Rational Functions with Factoring and GCFs
Problem 13 653 views 
Simplifying Rational Functions with Factoring and GCFs
Problem 14 706 views 
Simplifying Rational Functions with Factoring and GCFs
Problem 15 640 views
Comments (0)
Please Sign in or Sign up to add your comment.
·
Delete