1.
Factor
x
2
– 16.
A.
(
x
+ 4)(
x
+ 4)
B.
(
x
+ 4)(
x
– 4)
C.
(
x
+ 2)(
x
– 8)
D.
(
x
– 4)(
x
– 4)
Hint
2.
Solve 4
y
2
– 25 = 0.
A.
B.
C.
D.
or
Hint
3.
Factor 16
b
4
– 36
b
2
.
A.
4
b
2
(4
b
– 3)(4
b
+ 3)
B.
2
b
2
(2
b
– 3)(2
b
+ 3)
C.
4
b
2
(2
b
– 3)(2
b
+ 3)
D.
2
b
2
(4
b
– 3)(4
b
+ 3)
Hint
4.
Factor 3
x
3
+ 3
x
2
– 12
x
– 12.
A.
(
x
– 2)(
x
+ 2)(
x
+ 1)
B.
3(
x
– 2)(
x
+ 2)(
x
+ 1)
C.
(
x
– 2)(
x
– 2)(
x
+ 1)
D.
3(
x
– 2)(
x
– 2)(
x
+ 1)
Hint
5.
Suppose that we have a 3 ft. × 3 ft. piece of paper, and we cut out a square piece so that the area of the remaining piece is 5 feet. What is the length of a side of the square?
A.
B.
2 ft.
C.
D.
4 ft.
Hint