1.
Which expression is not a polynomial?
A.
3
x
2
+ 5
B.
7
y
3
C.
4
x
3
y
2
- 5
xy
+ 7
D.
Hint
2.
Arrange the terms of 4
x
2
y
3
– 2
x
4
y
+ 3
x
3
y
2
– 3 + 2
xy
so that the powers of
x
are in descending order.
A.
-3 - 2
x
4
y
+ 3
x
3
y
2
+ 4
x
2
y
3
+ 2
xy
B.
– 2
x
4
y
+ 3
x
3
y
2
+ 4
x
2
y
3
+ 2
xy
– 3
C.
-3 + 2
xy
+ 4
x
2
y
3
+ 3
x
3
y
2
- 2
x
4
y
D.
4
x
2
y
3
+ 3
x
3
y
2
- 2
x
4
y
+ 2
xy
– 3
Hint
3.
Arrange the terms of 6
x
4
y
2
– 4
x
2
y
+ 2
xy
3
+ 8 so that the powers of
y
are in ascending order.
A.
2
xy
3
+ 6
x
4
y
2
- 4
x
2
y
+ 8
B.
6
x
4
y
2
- 4
x
2
y
+ 2
xy
3
+8
C.
8 + 2
xy
3
- 4
x
2
y
+ 6
x
4
y
2
D.
8 – 4
x
2
y
+ 6
x
4
y
2
+ 2
xy
3
Hint
4.
Which of the following expressions is an example of a polynomial with powers of
x
in ascending order?
A.
x
+ 2
x
3
+ 5
x
4
B.
3
x
+ 5
x
3
– 7
x
4
– 3
C.
x
+ 2
x
3
– 2
x
2
– 5
x
4
D.
x
+ 1 – 6
x
3
+ 2
x
4
Hint
5.
How can the polynomial
x
2
y
2
+ 2
y
3
– 5
x
y
4
+
x
3
be written with powers of
x
in descending order?
A.
x
3
+
x
2
y
2
+ 2
y
3
– 5
x
y
4
B.
x
2
y
2
+
x
3
+ 2
y
3
– 5
x
y
4
C.
x
3
+
x
2
y
2
– 5
x
y
4
+ 2
y
3
D.
x
2
y
2
+ 2
y
3
+
x
3
– 5
x
y
4
Hint