1.
Use the quadratic formula to solve
x
2
+ 2
x
- 8 = 0.
A.
-4, -2
B.
-4
C.
-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 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.
-3.35, -0.15
D.
1.28, 3.66
Hint
4.
In the quadratic formula, what does
b
2
– 4
ac
tell you.
A.
the vertex of a quadratic equation
B.
the solution(s) in a quadratic equation
C.
the number of solutions in a quadratic equation
D.
the places where a quadratic equation crosses the
x
-axis
Hint
5.
Find the quadratic equation with 1 solution.
A.
x
2
– 2
x
+ 2= 0
B.
x
2
+ 6
x
+ 9 = 0
C.
4
x
2
+ 4
x
– 35= 0
D.
x
2
– 10
x
+ 21= 0
Hint