1.
Use the quadratic formula to solve
x
2
+ 2
x
- 8 = 0.
A.
-2
B.
-4, 2
C.
-4
D.
-4, -2
Hint
2.
Use the quadratic formula to solve 3
y
2
+ 2 = 8
y
. Approximate the solutions to the nearest hundredth.
A.
0.43, 2.87
B.
0.28, 2.39
C.
0.56, 4.77
D.
-0.64, 1.32
Hint
3.
Use the quadratic formula to solve
x
2
+ 4
x
+ 5 = 0.
A.
B.
-1
C.
-1, -4
D.
5
Hint
4.
Which method of solving quadratic equations should be used when only an estimated solution is necessary?
A.
graphing
B.
completing the square
C.
factoring
D.
quadratic formula
Hint
5.
Which of the following equations will have exactly 1 real root?
A.
9
x
2
+ 12
x
– 4
B.
2
x
2
+ 5
x
– 16
C.
x
2
– 6
x
– 9
D.
4
x
2
– 8
x
+ 4
Hint