The nth term of a sequence is given by the formula n^3 + 11n . Find the first four terms of the sequence given by this formula and the first term of the sequence which is bigger than one million. Prove that all terms of the sequence are divisible by 6.
Age 14 to 16 Challenge Level:
Time playing with the balance is important. It would be easy to just tell students about "moments" as a formula, but finding this relationship for themselves through practical investigation is of much higher value.
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