1.	Simplify Assume the denominator is not equal to zero.
		A.		B.
		C.		D.
		Hint
	2.	Simplify . Assume the denominator is not equal to zero.
		A.		B.
		C.		D.
		Hint
	3.	Simplify . Assume the denominator is not equal to zero.
		A.		B.
		C.		D.
		Hint
	4.	Simplify . Assume the denominator is not equal to zero.
		A.		B.	-b2
		C.		D.
		Hint
	5.	Find .
		A.		B.
		C.		D.
		Hint