If the sum of n terms of an A.P. is `3n^2+5`and its `m^(t h)`term is 164, find the value of m.

Explanation

To solve the problem step by step, we will use the information given about the sum of the first n terms of an arithmetic progression (A.P.) and the m-th term.

### Step 1: Write down the formula for the sum of n terms of an A.P.
The sum of the first n terms \( S_n \) of an A.P. is given as:
\[ S_n = 3n^2 + 5 \]

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