1.	Find the principal square root of 2i.
		A.	1 + i	B.	-1 - i
		C.	-1 + i	D.	1 - i
		Hint
	2.	Solve the equation x3 - 27 = 0.
		A.	3, ,
		B.	3, ,
		C.	3, ,
		D.	3, ,
		Hint
	3.	Find (1 + i)-6.
		A.		B.
		C.		D.
		Hint
	4.	Find . Express the result in rectangular form.
		A.	1024i	B.	-1024
		C.	1024	D.	-1024i
		Hint
	5.	Solve the equation x4 - 81 = 0.
		A.	3, -3, , -
		B.	3, -3i, ,
		C.	3, 3i, ,
		D.	3, -3, 3i, -3i
		Hint