To divide the complex number 1 + 3i by its conjugate 2 - i, the calculation leads to the result of (5i/5) + 1. This simplifies to 1 + i, confirming the correctness of the initial answer. The division process involves multiplying by the conjugate to eliminate the imaginary part in the denominator. The final simplified form is indeed correct as i. Understanding the division of complex numbers by their conjugates is essential for simplifying expressions in complex analysis.