Question

11. Use w and z to solve.
z = (- 5 √3 )/ 2 + (5/2)i
w = 1 + (√3) i
b. Convert zw using De Moivre’s Theorem.

Answer 1

What do they want us to do in part a?
Find z times w or something?

Answer 2

@everyone, not sure how to solve this but this is De Moivre's Theorem:
http://upload.wikimedia.org/math/e/1/8/e18f7e866bce6dcfb39f5bb766e1c53e.png

Answer 3

And can you clarify z please?
What is supposed to be in the denominator?
That whole thing or only the 2?
This is z?\[\Large\rm z=-\frac{5\sqrt3}{2}+\frac{5}{2}\mathcal i\]