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What are the first four terms of the sequence shown below?

an = n3 + n2

User Pavel K
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1 Answer

2 votes

Answer:

2, 12, 36, 80

Explanation:

Substitute n = 1, 2, 3, 4 into the n th term formula, that is

a₁ = 1³ + 1² = 1 + 1 = 2

a₂ = 2³ + 2² = 8 + 4 = 12

a₃ = 3³ + 3² = 27 + 9 = 36

a₄ = 4³ + 4² = 64 + 16 = 80

User ArtBelch
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