Question

The nth term of a sequence is 4n2-n-1. What is the 10th term of the sequence?

Answer 1

Step-by-step explanation:

1. 5770+3677×/^36722£-842

Answer 2

Answer:

The 10th term is 389.

Step-by-step explanation:

An arithmetic progression (AP) is a list or sequence of integers in which each phrase is obtained by adding a specified number to the previous term. The common difference of the arithmetic progression is the fixed number.

Given: The given sequence is $4n^{2} -n-1$.

Find: The 10th term of the sequence.

Solution:

$n=10$

So,

$4\times10^{2} -10-1\\=4\times100-10-1\\=400-10-1\\=389$

Hence, the 10th term is $389$.

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