1.	Solve x2 - 4x + 1 = 0 by completing the square.
		A.	1, 3	B.
		C.		D.
		Hint
	2.	Solve a2 - a - 20 = 0 by completing the square.
		A.		B.	-5, 4
		C.	-4, 5	D.
		Hint
	3.	Solve 2z2 + z - 4 = 0 by completing the square.
		A.		B.	-2, 1
		C.		D.
		Hint
	4.	Find the solutions of the equation.(x – 2) 2 – 1 = 3
		A.	x = 0 and x = 4
		B.	x = –4 and x = –4
		C.	x = 4 and x = –4
		D.	x = 0 and x = –4
		Hint
	5.	Rewrite the expression as a square with a constant added or subtracted.x2 – 6x – 15
		A.	(x – 3) 2 + 9
		B.	(x – 3) 2 – 24
		C.	(x – 3) 2 – 15
		D.	(x – 3) 2 – 9
		Hint