1.
Use the quadratic formula to solve
x
2
+ 2
x
- 8 = 0.
A.
-4, 2
B.
-2
C.
-4
D.
-4, -2
Hint
2.
Use the quadratic formula to solve
x
2
+ 4
x
+ 5 = 0.
A.
-1
B.
C.
5
D.
-1, -4
Hint
3.
How many real roots exist if the discriminant of the equation = 0?
A.
cannot be determined from given information
B.
1
C.
2
D.
0
Hint
4.
How many real roots are there for the equation 2
x
2
+ 6
x
+ 3?
A.
2
B.
0
C.
1
D.
cannot be determined from given information
Hint
5.
Which of the following equations will have exactly 1 real root?
A.
9
x
2
+ 12
x
– 4
B.
4
x
2
– 8
x
+ 4
C.
2
x
2
+ 5
x
– 16
D.
x
2
– 6
x
– 9
Hint