1.
State the number of positive real zeros for the polynomial
f
(
x
) =
x
3
+ 4
x
2
+
x
+ 5.
A.
1
B.
0
C.
3
D.
2
Hint
2.
One zero of
h
(
x
) =
x
3
- 3
x
2
+
x
+ 5 is 2 -
i
. Which of the following is another zero?
A.
1 -
i
B.
2 +
i
C.
1 - 2
i
D.
1
Hint
3.
Which is not a root of
z
3
+ 8 = 0?
A.
-2
B.
C.
D.
2
Hint
4.
Find all of the roots of the equation
A.
B.
C.
D.
Hint
5.
Find all the zeros of
.
A.
B.
C.
D.
Hint