1.	Solve the equation by backtracking.
		A.	a = –10	B.	a = 1
		C.	a = 10	D.	a = -1
		Hint
	2.	Solve the equation by backtracking.
		A.	f = –21	B.	f = –24
		C.	f = 16	D.	f = –28
		Hint
	3.	Solve the equation by backtracking.6(x + 5) 2 – 10 = 14
		A.	x = –7	B.	x = –3 and x = –7
		C.	x = 3	D.	x = –3
		Hint
	4.	Solve the equation by backtracking.
		A.	p = 12 and p = –12	B.	p = –12
		C.	p = 12	D.	p = –10
		Hint
	5.	Give the approximate solutions of this equation.(2z – 3) 2 – 31 = 33
		A.	z = 2.5 and z = 5.5
		B.	z = 2.5 and z = –5.5
		C.	z = –2.5 and z = 5.5
		D.	z = –2.5 and z = –5.5
		Hint