1.
Find the value of
c
that makes
x
2
+ 16
x
+
c
a perfect square.
A.
64
B.
-64
C.
16
D.
8
Hint
2.
Solve 2
z
2
+
z
- 4 = 0 by completing the square.
A.
B.
C.
D.
-2, 1
Hint
3.
Solve
x
2
– 8
x
+ 16 = 13 by taking the square root of each side.
A.
4
B.
-2
C.
-4
D.
2
Hint
4.
Solve 0.25
x
2
– 7
x
– 15 = 0.
A.
{–2, 30}
B.
{4, 30}
C.
{–5, 3}
D.
{3, 15}
Hint
5.
When using a quadratic equation of the form
a
x
2
+
b
x
+
c
= 0 to find distances, what should always be ignored?
A.
any negative solution
B.
any solution if
a
is negative
C.
any solution if
is negative
D.
any positive solution
Hint