1.
Use the quadratic formula to solve
x
2
+ 2
x
- 8 = 0.
A.
-4, 2
B.
-4, -2
C.
-4
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.
1.28, 3.66
B.
-3.35, -0.15
C.
-2.78, -0.72
D.
-5.56, -1.44
Hint
4.
Which method of solving quadratic equations is best suited for the equation
x
2
– 18
x
= 0
A.
completing the square
B.
graphing
C.
quadratic formula
D.
factoring
Hint
5.
How many real roots are there for the equation 2
x
2
+ 6
x
+ 3?
A.
2
B.
1
C.
cannot be determined from given information
D.
0
Hint