Solve the equation in the complex number system.4x2 + 1 = 3x
A. {
- 
i, 
+ 
i}
B. {
- 
i, - 
+ 
i}
C. {- 
- 
i, - 
+ 
i}
D. {- 
- 
i, 
+ 
i}
Answer: A
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Divide the polynomial by the monomial.
A. 20 B. 10x6 + 10x3 + x C. 10x5 + 10x2 + x D. 10x5 + 10x3 + x2
Find all the complex roots. Write the answer in the indicated form.The complex cube roots of 8i (rectangular form)
A. -2i, 
+ i, - 
+ i
B. 2i, 
+ i, - 
+ i
C. -2i, - 
- i, 
- i
D. 2i, 
- i, - 
- i
Solve the problem.The space in a landfill (in acres) decreases with time as given by the function 
where t is measured in years. How much space is left when t = 6?
A. 110 acres B. 220 acres C. 200 acres D. 400 acres
Fill in the blank with one of the choices listed below. Some choices may be used more than once. 
The 
of a list of numbers of items is 
.
A. numerator B. median C. mean D. mode