SOLUTION: Express "(1 + 3i)^-4" in the form a + bi. What I have tried already is to, convert the "1 + 3i" into polar form, which is (2e^(pi/3))^-4. I'm not sure what to do from there though.

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Question 1184507: Express "(1 + 3i)^-4" in the form a + bi. What I have tried already is to, convert the "1 + 3i" into polar form, which is (2e^(pi/3))^-4. I'm not sure what to do from there though. Any help is appreciated, and thanks.
Found 2 solutions by ikleyn, robertb:
Answer by ikleyn(52874)   (Show Source): You can put this solution on YOUR website!

Answer by robertb(5830)   (Show Source): You can put this solution on YOUR website!
The problem with representing with is that .

The best way to evaluate is to evaluate it directly:

.

BUT, in case you actually meant , then



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