1.	Find . Write the difference in simplest form.
		A.		B.
		C.		D.
		Hint
	2.	Find . Write the difference in simplest form.
		A.		B.	-2
		C.		D.
		Hint
	3.	Evaluate if .
		A.		B.
		C.		D.
		Hint
	4.	Solve z = – .
		A.		B.	1
		C.		D.
		Hint
	5.	Evaluate + f if f = .
		A.		B.
		C.		D.
		Hint