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- Go to Product of numbers, each of which is the difference of two squares
Sorry . . . my brain is in meltdown mode now . . . 
posted by
JimmyA
on March 13, 2015 at 1:59 PM
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crossed eyes and a headache????
posted by
Kabu
on March 7, 2015 at 4:08 PM
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It brings me back to my math days.
posted by
FormerStudentIntern
on March 7, 2015 at 12:56 PM
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