1.	The roots of  x2 + 4x + 7 are________.
		A.	real and rational	B.	real and irrational
		C.	imaginary	D.	real and imaginary
		Hint
	2.	Solve  x2 + 7x + 8 = 0.
		A.		B.
		C.		D.
		Hint
	3.	Solve  x2 - 6x + 25 = 0.
		A.	3 ± 4i	B.
		C.	6 ± 8i	D.	-3 ± 4i
		Hint
	4.	Solve 2x2 - 4x + 3 = 0.
		A.		B.
		C.		D.
		Hint
	5.	Solve by using the quadratic formula.
		A.		B.
		C.		D.
		Hint