1.	Factor x2 – 16.
		A.	(x – 4)(x – 4)	B.	(x + 4)(x – 4)
		C.	(x + 2)(x – 8)	D.	(x + 4)(x + 4)
		Hint
	2.	Solve x2 – x – 72 = 0.
		A.	x = -8	B.	x = 9
		C.	x = 8 or x = -9	D.	x = -8 or x = 9
		Hint
	3.	Solve a2 – 12a = -27.
		A.	a = 3	B.	a = 9
		C.	a = -27 or a = -15	D.	a = 3 or a = 9
		Hint
	4.	Find the solutions of the equation.4y2 – 16 = 0
		A.	y = and y =	B.	y = and y =
		C.	y = –2 and y = –2	D.	y = 2 and y = –2
		Hint
	5.	Factor the quadratic expression.x2 + 2x – 24
		A.	(x – 6)(x + 4)	B.	(x + 6)(x – 4)
		C.	(x + 6)(x + 4)	D.	(x – 6)(x – 4)
		Hint