Evaluate: `intcosx.e^(x).x^(2)dx`

Explanation

To evaluate the integral \( \int \cos x \cdot e^x \cdot x^2 \, dx \), we will use integration by parts. The integration by parts formula is given by:

\[ \int u \, dv = uv - \int v \, du \]

### Step 1: Choose \( u \) and \( dv \)
Let:
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