1.
Find the value of
c
that makes
x
2
+ 16
x
+
c
a perfect square.
A.
64
B.
16
C.
-64
D.
8
Hint
2.
Find the value of
b
that makes
x
2
+
bx
+ 36 a perfect square.
A.
12
B.
6
C.
-12, 12
D.
324
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.
{4, 30}
B.
{–5, 3}
C.
{–2, 30}
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 positive solution
C.
any solution if
is negative
D.
any solution if
a
is negative
Hint