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Difference of Perfect Squares  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
The first thing you should look for in any factoring problem is a greatest common factor, or monomial that multiplies into all of the terms of the polynomial. From there, factor the remaining polynomial. If you don't recognize the GCF in the very beginning, you can still get the correct factorization in the end, but chances are that you'll be dealing with much larger numbers than necessary. Be sure to check each of your factors in the end to see if you might have missed a GCF along the way.
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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.... :)”
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Sample Problems (8)
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Difference of Perfect Squares
Problem 1 7,191 viewsFactor:
x² − 16 
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Problem 2 6,596 viewsFactor:
16x² − 81 
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Problem 3 5,491 viewsFactor:
x⁶ − 4y² 
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Problem 4 957 views 
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Problem 5 880 views 
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Problem 6 841 views 
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Problem 7 961 views 
Difference of Perfect Squares
Problem 8 995 views
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