SOLUTION: factors of t^4-81

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Question 238897: factors of t^4-81
Found 2 solutions by JimboP1977, Alan3354:
Answer by JimboP1977(311) About Me  (Show Source):
You can put this solution on YOUR website!
(t^2+9)(t^2-9)

Answer by Alan3354(69443) About Me  (Show Source):