(1+3t) (1-9t)^2 (1-3t) Answer 9t^2 or (3t+1)(-3t+1) I'm not sure which answer I have is right, could you help me please.
You mean (1 - 9t^2) which is in fact (1-3t)(1+3t) so indeed the least common multiple is (1-9 t^2) or (1-3t)(1+3t)
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