1.
Simplify (4
r
-
s
) - (
r
+ 2
s
) + (3
r
-
s
).
A.
3
r
- 2
s
B.
6
r
- 3
s
C.
8
r
D.
6
r
- 4
s
Hint
2.
Find (4
x
2
+ 3
x
) + (7
x
2
– 5
x
– 6).
A.
11
x
2
– 8
x
– 6
B.
9
x
– 6
C.
11
x
4
– 2
x
2
– 6
D.
11
x
2
– 2
x
– 6
Hint
3.
Find the difference (-3
x
3
– 7
x
2
+ 5
x
– 4) – (6
x
2
– 8).
A.
–3
x
3
– 13
x
2
+ 5
x
- 12
B.
–3
x
3
–
x
2
+ 5
x
- 12
C.
-11
x
8
+ 4
D.
–3
x
3
– 13
x
2
+ 5
x
+ 4
Hint
4.
Find the polynomial that represents the measure of the perimeter of the triangle.
A.
7
x
3
y
6
+ 10
x
2
– 2
y
B.
5
xy
2
+ 10
x
C.
15
xy
2
D.
7
xy
2
+ 10
x
– 2
y
Hint
5.
Determine whether the expression
x
+
y
+
z
is a monomial, binomial, or trinomial.
A.
monomial
B.
binomial
C.
Cannot be determined from given information.
D.
trinomial
Hint