1.
State the number of positive real zeros for the polynomial
f
(
x
) =
x
3
+ 4
x
2
+
x
+ 5.
A.
0
B.
1
C.
2
D.
3
Hint
2.
One zero of
p
(
x
) =
x
3
- 3
x
2
- 6
x
+ 8 is 1. Which of the following is another zero?
A.
-1
B.
1 +
i
C.
4
D.
1 -
i
Hint
3.
What is the polynomial function of least degree with integral coefficients that has zeros 2 and 3
i
?
A.
y
=
x
3
- 2
x
2
- 9
x
+ 18
B.
y
=
x
2
+
x
- 6
C.
y
=
x
3
- 2
x
2
+ 9
x
- 18
D.
y
=
x
2
- 5
x
- 6
Hint
4.
Which is not a root of
z
3
+ 8 = 0?
A.
-2
B.
2
C.
D.
Hint
5.
Find all the zeros of
.
A.
B.
C.
D.
Hint