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Difference of Perfect Squares  Problem 6
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
Although there is a shortcut that many students memorize for factoring the difference of perfect squares, here we look in more depth at why the shortcut works. We compare three different methods for factoring. Beware that this shortcut only works when you have two terms, and only works for differences (or subtraction problems.)
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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.
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Sample Problems (8)
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Difference of Perfect Squares
Problem 1 7,630 viewsFactor:
x² − 16 
Difference of Perfect Squares
Problem 2 7,030 viewsFactor:
16x² − 81 
Difference of Perfect Squares
Problem 3 5,856 viewsFactor:
x⁶ − 4y² 
Difference of Perfect Squares
Problem 4 1,247 views 
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Problem 5 1,161 views 
Difference of Perfect Squares
Problem 6 1,134 views 
Difference of Perfect Squares
Problem 7 1,261 views 
Difference of Perfect Squares
Problem 8 1,322 views
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