Question

The nth term of a sequence is
2n^2 + 4n - 1
Work out the 10th term of the sequence

Answer 1

a₁₀ = 239

Explanation:

Substitute n = 10 into the nth term rule , that is

a₁₀ = 2(10)² + 4(10) - 1

= 2(100) + 40 - 1

= 200 + 39

= 239