1.
Refer to the diagram below. What polynomial is modeled by the algebra tiles?
A.
3
x
2
- 2
x
- 1
B.
-2
x
2
+ 3
x
+ 1
C.
-3
x
2
+ 2
x
+ 1
D.
-2
x
2
- 3
x
- 1
Hint
2.
Find the sum (–5
x
+ 6) + (–2
x
– 7).
A.
–7
x
+ 1
B.
7
x
+ 13
C.
–7
x
– 1
D.
–7
x
+ 13
Hint
3.
Find the sum.
A.
-3
b
3
-
b
2
- 3
b
B.
-3
b
3
- 3
b
+ 1
C.
-3
b
3
- 3
b
D.
-3
b
3
+
b
2
- 3
b
Hint
4.
Find the difference (4 - 7
a
2
) - (-
a
+ 2
a
2
- 1).
A.
-9
a
2
+
a
+ 5
B.
-5
a
2
+
a
+ 5
C.
-9
a
2
+
a
+ 3
D.
-5
a
2
-
a
+ 3
Hint
5.
Find the difference.
A.
7
x
3
- 11
x
2
+ 5
x
+ 17
B.
7
x
3
- 11
x
2
+ 5
x
- 1
C.
7
x
3
- 11
x
2
- 5
x
+ 17
D.
7
x
3
- 11
x
2
- 5
x
- 1
Hint