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Difference of Perfect Squares  Problem 4
Brian McCall
Brian McCall
Univ. of Wisconsin
J.D. Univ. of Wisconsin Law school
Brian was a geometry teacher through the Teach for America program and started the geometry program at his school
When we look to factor, the shortcut for a difference of perfect squares can be useful but identifying when to use it is not always easy. Here we look at differences of perfect square problems that are not obvious sometimes there are multiple variables, or perhaps a binomial that is squared. Always check your final factorization by multiplying to return to the original polynomial.
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Brian McCall
B.S. in Chemical Engineering, University of Wisconsin
J.D. University of Wisconsin Law School (magna cum laude)
He doesn't beat around the bush. His straightforward teaching style is effective and his subtle midwestern accent is engaging. There's never a dull moment with him.
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Sample Problems (8)
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Difference of Perfect Squares
Problem 1 7,274 viewsFactor:
x² − 16 
Difference of Perfect Squares
Problem 2 6,690 viewsFactor:
16x² − 81 
Difference of Perfect Squares
Problem 3 5,565 viewsFactor:
x⁶ − 4y² 
Difference of Perfect Squares
Problem 4 1,019 views 
Difference of Perfect Squares
Problem 5 940 views 
Difference of Perfect Squares
Problem 6 905 views 
Difference of Perfect Squares
Problem 7 1,033 views 
Difference of Perfect Squares
Problem 8 1,063 views
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