1.
Use the quadratic formula to solve
x
2
+ 2
x
- 8 = 0.
A.
-2
B.
-4
C.
-4, -2
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.
-0.64, 1.32
B.
0.43, 2.87
C.
0.28, 2.39
D.
0.56, 4.77
Hint
4.
Which method of solving quadratic equations should be used when only an estimated solution is necessary?
A.
quadratic formula
B.
completing the square
C.
factoring
D.
graphing
Hint
5.
Which method of solving quadratic equations is best suited for the equation
x
2
– 18
x
= 0
A.
factoring
B.
completing the square
C.
graphing
D.
quadratic formula
Hint