Given the function `f(x) = x^(2) + 2x + 5`. Find f(-1), f(2), f(5).

Explanation

To solve the problem, we need to evaluate the function \( f(x) = x^2 + 2x + 5 \) at three different values: \( f(-1) \), \( f(2) \), and \( f(5) \).

### Step 1: Calculate \( f(-1) \)
1. Substitute \( x = -1 \) into the function:
\[ f(-1) = (-1)^2 + 2(-1) + 5 \]
2. Calculate each term:
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