1.	Which equation is in quadratic form?
		A.		B.	x4 - x2 + x - 1 = 0
		C.		D.	3x3 + 3x + 3 = 0
		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.	Write the expression in quadratic form.
		A.		B.
		C.	cannot be done, since	D.
		Hint
	4.	Which expression cannot be written in quadratic form?
		A.		B.
		C.		D.
		Hint
	5.	Solve
		A.		B.	1, 1.22
		C.	1, 11.31	D.
		Hint