Simplify: `(4+\ sqrt(5))/(4-sqrt(5))+(4-\ sqrt(5))/(4+\ sqrt(5))`

Explanation

To simplify the expression \(\frac{4+\sqrt{5}}{4-\sqrt{5}} + \frac{4-\sqrt{5}}{4+\sqrt{5}}\), we will follow these steps:

### Step 1: Find a common denominator
The common denominator for the two fractions is \((4 - \sqrt{5})(4 + \sqrt{5})\).

### Step 2: Rewrite each fraction with the common denominator
We can rewrite the expression as:

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