1.	Find .
		A.	-14	B.	14
		C.	-15	D.	15
		Hint
	2.	Find
		A.		B.
		C.		D.
		Hint
	3.	Solve the equation x2 = 0.81.
		A.	none of these is correct
		B.	x = -0.9 only
		C.	x = 0.9 only
		D.	x = 0.9 or x = -0.9
		Hint
	4.	Find .
		A.	-25	B.	25
		C.	15	D.	-15
		Hint
	5.	Find -.
		A.	-12.5	B.	5
		C.	-5	D.	12.5
		Hint