1.
Which expression is not a polynomial?
A.
B.
3
x
2
+ 5
C.
7
y
3
D.
4
x
3
y
2
- 5
xy
+ 7
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
xy
+ 4
x
2
y
3
+ 3
x
3
y
2
- 2
x
4
y
B.
-3 - 2
x
4
y
+ 3
x
3
y
2
+ 4
x
2
y
3
+ 2
xy
C.
4
x
2
y
3
+ 3
x
3
y
2
- 2
x
4
y
+ 2
xy
– 3
D.
– 2
x
4
y
+ 3
x
3
y
2
+ 4
x
2
y
3
+ 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.
4
x
C.
x
2
– 10
x
D.
x
2
– 2
x
+ 5
Hint
4.
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
– 5
x
y
4
+ 2
y
3
B.
x
2
y
2
+ 2
y
3
+
x
3
– 5
x
y
4
C.
x
3
+
x
2
y
2
+ 2
y
3
– 5
x
y
4
D.
x
2
y
2
+
x
3
+ 2
y
3
– 5
x
y
4
Hint
5.
Which pair of terms are
unlike
terms?
A.
B.
3
r
3
t
2
, -3
r
3
t
2
C.
D.
Hint