1.	Solve y4 - 18y2 + 81 = 0.
		A.	-3, 3, -3i, 3i	B.	3, 3i
		C.	-3, 3	D.	3
		Hint
	2.	Solve
		A.	Solutions are –1 and 3125.	B.	Solutions are –1, 1, and 3125.
		C.	Solutions are 1 and .	D.	Solutions are 1 and 3125.
		Hint
	3.	Solve x4 – 625 = 0
		A.		B.
		C.	5, 5i	D.
		Hint
	4.	Which expression cannot be written in quadratic form?
		A.		B.
		C.		D.
		Hint
	5.	Solve
		A.	1, 11.31	B.
		C.	1, 1.22	D.
		Hint