1.
Use the quadratic formula to solve
x
2
+ 2
x
- 8 = 0.
A.
-4
B.
-4, -2
C.
-4, 2
D.
-2
Hint
2.
Use the quadratic formula to solve 6
x
2
-
x
- 1 = 0.
A.
B.
C.
D.
Hint
3.
Use the quadratic formula to solve 2
x
2
+ 7
x
+ 4 = 0. Approximate the solutions to the nearest hundredth.
A.
-5.56, -1.44
B.
-2.78, -0.72
C.
1.28, 3.66
D.
-3.35, -0.15
Hint
4.
How many real roots are there for the equation 2
x
2
+ 6
x
+ 3?
A.
0
B.
1
C.
cannot be determined from given information
D.
2
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.
x
2
– 6
x
– 9
D.
2
x
2
+ 5
x
– 16
Hint