Find the 2nd derivative of `x^(6).e^(6x)` with respect to x.

Explanation

To find the second derivative of the function \( y = x^6 e^{6x} \) with respect to \( x \), we will follow these steps:

### Step 1: Find the first derivative \( \frac{dy}{dx} \)

We will use the product rule for differentiation, which states that if \( y = u \cdot v \), then:
\[ \frac{dy}{dx} = u \frac{dv}{dx} + v \frac{du}{dx} \]
...