Integrate the functions`sqrt(x^2+4x-5)`

Explanation

To solve the integral \(\int \sqrt{x^2 + 4x - 5} \, dx\), we will follow these steps:

### Step 1: Rewrite the expression under the square root
First, we need to complete the square for the quadratic expression \(x^2 + 4x - 5\).

\[ x^2 + 4x - 5 = (x^2 + 4x + 4) - 4 - 5 = (x + 2)^2 - 9 \]
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