complex numbers - Suppose $x = 3 - 2i$ and $y = 4 + i$. Find both square roots of y. Then indicate which one is the principle square root.

Suppose $x = 3 - 2i$ and $y = 4 + i$. Find both square roots of $y$. Then indicate which one is the principle square root.

Use the polar form of complex numbers to accomplish this task.

I'm not looking for an answer, as much as just some help as to how I would go about solving this problem. I really don't understand what I'm supposed to find.