1.
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
+ 4
B.
–3
x
3
– 13
x
2
+ 5
x
- 12
C.
-11
x
8
+ 4
D.
–3
x
3
–
x
2
+ 5
x
- 12
Hint
2.
Find the sum (4
xy
2
– 3
x
2
y
– 5
xy
– 6) + (-5
xy
2
– 2
xy
+ 3).
A.
-
xy
2
– 3
x
2
y
– 7
xy
– 3
B.
4
xy
2
– 8
x
2
y
– 7
xy
– 3
C.
4
xy
2
– 7
xy
– 3
D.
-
xy
2
– 3
x
2
y
– 3
xy
– 3
Hint
3.
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
+ 3
xy
2
B.
-11
x
4
y
2
- 3
x
2
y
+ 3
xy
2
- 10
C.
-11
x
4
y
2
- 3
x
2
y
+
xy
2
- 10
D.
-3
x
4
y
2
- 4
xy
2
+ 2
xy
2
- 10
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.
Cannot be determined from given information.
B.
No, because there are two variables.
C.
Yes.
D.
No, because there are two terms.
Hint