1.
Find the value of
b
that makes
x
2
+
bx
+ 36 a perfect square.
A.
12
B.
324
C.
6
D.
-12, 12
Hint
2.
Solve
a
2
-
a
- 20 = 0 by completing the square.
A.
-4, 5
B.
C.
D.
-5, 4
Hint
3.
Solve 2
z
2
+
z
- 4 = 0 by completing the square.
A.
B.
C.
-2, 1
D.
Hint
4.
Solve
x
2
– 12
x
+ 34 = 0 by taking the square root of each side.
A.
B.
{6}
C.
{5, 7}
D.
Hint
5.
Solve 0.25
x
2
– 7
x
– 15 = 0.
A.
{–5, 3}
B.
{4, 30}
C.
{–2, 30}
D.
{3, 15}
Hint