1.
Which expression is not a polynomial?
A.
4
x
3
y
2
- 5
xy
+ 7
B.
C.
7
y
3
D.
3
x
2
+ 5
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.
– 2
x
4
y
+ 3
x
3
y
2
+ 4
x
2
y
3
+ 2
xy
– 3
B.
-3 - 2
x
4
y
+ 3
x
3
y
2
+ 4
x
2
y
3
+ 2
xy
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.
Write a polynomial to represent the area of a square with a side
x
minus the area of a triangle with a base 2
x
and a height of 5.
A.
x
2
– 5
x
B.
x
2
– 2
x
+ 5
C.
x
2
– 10
x
D.
4
x
Hint
4.
What is the degree of 3
a
– 4
a
2
b
3
+
b
3
– 4
a
b
?
A.
5
B.
3
C.
1
D.
2
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
2
y
2
+
x
3
+ 2
y
3
– 5
x
y
4
B.
x
3
+
x
2
y
2
– 5
x
y
4
+ 2
y
3
C.
x
3
+
x
2
y
2
+ 2
y
3
– 5
x
y
4
D.
x
2
y
2
+ 2
y
3
+
x
3
– 5
x
y
4
Hint