The nth term of a sequence is an^2 + bn. Write down an expression, in terms of a and b, for the 3rd term.
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6
Answer:
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Answered by
4
Answer:
9a+3b
Step-by-step explanation:
Substitute 3 as the nth term as it is the 3rd term.
a(3)^2 + b(3)
a(9) + b(3)
3rd term= 9a+3b
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