SOLUTION: Fully factor 81(7a+3)^4 - 72(7a+3)^2 + 16

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Question 1134226: Fully factor 81(7a+3)^4 - 72(7a+3)^2 + 16
Answer by Alan3354(69443) About Me  (Show Source):
You can put this solution on YOUR website!
Hint: the 2 outside terms are perfect squares.