1.
Find the value of
c
that makes
x
2
+ 16
x
+
c
a perfect square.
A.
64
B.
16
C.
8
D.
-64
Hint
2.
Solve
x
2
- 4
x
+ 1 = 0 by completing the square.
A.
B.
1, 3
C.
D.
Hint
3.
Solve
x
2
– 12
x
+ 34 = 0 by taking the square root of each side.
A.
B.
{6}
C.
{5, 7}
D.
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 solution if
a
is negative
B.
any positive solution
C.
any solution if
is negative
D.
any negative solution
Hint