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 6
x
2
-
x
- 1 = 0.
A.
B.
C.
D.
Hint
3.
Use the quadratic formula to solve 3
y
2
+ 2 = 8
y
. Approximate the solutions to the nearest hundredth.
A.
0.28, 2.39
B.
-0.64, 1.32
C.
0.56, 4.77
D.
0.43, 2.87
Hint
4.
Use the quadratic formula to solve
x
2
+ 4
x
+ 5 = 0.
A.
-1
B.
-1, -4
C.
5
D.
Hint
5.
How many real roots are there for the equation 2
x
2
+ 6
x
+ 3?
A.
cannot be determined from given information
B.
0
C.
1
D.
2
Hint