Evaluate: (i) `int(2^x+3^x)/(5^x)\ dx` (ii) `int((a^x+b^x)^2)/(a^x\ b\ ^x)\ dx`

Explanation

Let's solve the given integrals step by step.

### (i) Evaluate the integral:
\[ \int \frac{2^x + 3^x}{5^x} \, dx \]

**Step 1: Rewrite the integral**
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