Find the derivative of `x^2-2`at `x = 10`.

Explanation

To find the derivative of the function \( f(x) = x^2 - 2 \) at \( x = 10 \), we will use the definition of the derivative. The derivative \( f'(a) \) at a point \( a \) is defined as:

\[ f'(a) = \lim_{h \to 0} \frac{f(a + h) - f(a)}{h} \]

### Step 1: Identify the function and point of interest
We have:
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