SOLUTION: (ab-4)^2(ab+4)^2

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Question 290494: (ab-4)^2(ab+4)^2
Answer by richwmiller(17219) About Me  (Show Source):
You can put this solution on YOUR website!
difference of squares
((ab)^2-16)^2
a^4*b^4-32*a^2*b^2+256