1.
Simplify (4
r
-
s
) - (
r
+ 2
s
) + (3
r
-
s
).
A.
6
r
- 3
s
B.
8
r
C.
6
r
- 4
s
D.
3
r
- 2
s
Hint
2.
Find the difference (-7
x
4
y
2
– 3
x
2
y
+ 2
xy
2
– 5) – (4
x
4
y
2
–
xy
2
– 5).
A.
-11
x
4
y
2
- 3
x
2
y
+
xy
2
- 10
B.
-11
x
4
y
2
- 3
x
2
y
+ 3
xy
2
C.
-11
x
4
y
2
- 3
x
2
y
+ 3
xy
2
- 10
D.
-3
x
4
y
2
- 4
xy
2
+ 2
xy
2
- 10
Hint
3.
Find the polynomial that represents the measure of the perimeter of the triangle.
A.
7
xy
2
+ 10
x
– 2
y
B.
7
x
3
y
6
+ 10
x
2
– 2
y
C.
5
xy
2
+ 10
x
D.
15
xy
2
Hint
4.
Simplify (7
x
2
+ 2
x
– 3) – (2
x
2
– 11
x
+ 4)
A.
B.
C.
5
x
2
+ 13
x
– 7
D.
Hint
5.
Determine whether the expression 5
x
3
y
3
–
x
2
y
2
is a polynomial.
A.
Yes.
B.
Cannot be determined from given information.
C.
No, because there are two terms.
D.
No, because there are two variables.
Hint