1.	Find the value of c that makes x2 + 16x + c a perfect square.
		A.	-64	B.	8
		C.	16	D.	64
		Hint
	2.	Solve a2 - a - 20 = 0 by completing the square.
		A.		B.	-4, 5
		C.		D.	-5, 4
		Hint
	3.	Solve 2z2 + z - 4 = 0 by completing the square.
		A.		B.
		C.	-2, 1	D.
		Hint
	4.	Solve x2 – 8x + 16 = 13 by taking the square root of each side.
		A.	-4	B.	2
		C.	-2	D.	4
		Hint
	5.	When using a quadratic equation of the form ax2 + bx + c = 0 to find distances, what should always be ignored?
		A.	any positive solution	B.	any solution if is negative
		C.	any negative solution	D.	any solution if a is negative
		Hint