1.	Simplify the expression (5 – 2i) – (2 – 7i).
		A.	7 + 5i	B.	3 + 5i
		C.	3 – 9i	D.	7 – 9i
		Hint
	2.	Simplify (2 – 7i)(4 + 2i).
		A.	6 – 24i	B.	6 – 6i
		C.	22 – 24i	D.	22 – 6i
		Hint
	3.	What is the conjugate of –9 – 2i?
		A.	9	B.	2 + 9i
		C.	–9 + 2i	D.	2 – 9i
		Hint
	4.	Simplify (3 + 4i) + (5 – 7i).
		A.	-4 + 9i	B.	7 - 2i
		C.	15 - 28i	D.	8 - 3i
		Hint
	5.	Simplify .
		A.		B.
		C.		D.
		Hint