1.	Simplify
		A.		B.	10a2|b|
		C.	10a2b	D.	10ab
		Hint
	2.	Simplify
		A.		B.
		C.		D.
		Hint
	3.	Simplify
		A.		B.
		C.	0	D.
		Hint
	4.	Simplify:
		A.		B.
		C.		D.
		Hint
	5.	Is the following expression simplified?
		A.	yes, since the power on x is < 1 in the numerator
		B.	no, since there is a radical in the denominator
		C.	no, since the index of 4 could be smaller
		D.	Yes, since the power on x is = 1 in the denominator.
		Hint