1.
Which of the following trinomials is a perfect square trinomial?
A.
4
y
2
+ 10
y
+ 25
B.
r
2
- 6
r
+ 36
C.
9
a
2
- 12
a
+ 4
D.
x
2
+ 16
x
+ 16
Hint
2.
Solve 5
x
2
– 10
x
= 0.
A.
x
= 0 or
x
= 2
B.
x
= 0
C.
x
= 2
D.
x
= 0 or
x
= -2
Hint
3.
Solve
x
2
–
x
– 72 = 0.
A.
x
= -8 or
x
= 9
B.
x
= -8
C.
x
= 8 or
x
= -9
D.
x
= 9
Hint
4.
Find the solutions of the equation.(
s
– 5)(
s
+ 1) = 0
A.
s
= –5 and
s
= 1
B.
s
= 5 and
s
= 1
C.
s
= –5 and
s
= –1
D.
s
= 5 and
s
= –1
Hint
5.
Rewrite the expression as a product of two binomials.
x
2
–
x
– 56
A.
(
x
+ 7)(
x
– 8)
B.
(
x
– 7)(
x
+ 8)
C.
(
x
+ 7)(
x
+ 8)
D.
(
x
– 7)(
x
– 8)
Hint