If the first and the nth terms of a GP are a and b respectively and if P is the product of the first n terms, then `P^(2)` is equal to

Explanation

To solve the problem, we need to find \( P^2 \) where \( P \) is the product of the first \( n \) terms of a geometric progression (GP) with the first term \( a \) and the \( n \)th term \( b \).

### Step-by-Step Solution:

1. **Identify the first and nth terms of the GP:**
- The first term \( a_1 = a \).
- The nth term \( a_n = ar^{n-1} = b \), where \( r \) is the common ratio.

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