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Greatest Common Factors  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
Factoring is the process of taking a polynomial that is a string of sums and differences and rewriting the expression as a product. This is a complicated process, but the first step is always looking for and "undistributing" a greatest common factor if one exists. In these problems, we are looking for what number, or constant, multiplies into all terms of the polynomial. Lastly, sometimes it is useful to pull out a negative factor, even though it would technically not be the greatest factor.
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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.
Your tutorials are good and you have a personality as well. I hope you have more advanced college level stuff, because I like the way you teach.”
Thanks alot for such great lectures... I never found learning this easier ever before... keep up the great work.... :)”
You seem so kind, it's awesome. Easier to learn from people who seem to be rooting for ya!' thanks”
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Sample Problems (8)
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Greatest Common Factors
Problem 1 10,595 viewsFind the greatest common factor of
a) 24 and 60b) 18x² and 27x³ 
Greatest Common Factors
Problem 2 8,390 viewsFactor:
a) 5x³ + 10xb) 6p³ − 12p² − 60p 
Greatest Common Factors
Problem 3 6,919 viewsFactor:
3x(x + 6) − 10(x + 6) 
Greatest Common Factors
Problem 4 984 views 
Greatest Common Factors
Problem 5 938 views 
Greatest Common Factors
Problem 6 916 views 
Greatest Common Factors
Problem 7 856 views 
Greatest Common Factors
Problem 8 517 views
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