Find the indicated roots. Write the answer in a + bi form.Cube roots of 8i
A. 2i, 
+ i, - 
+ i
B. 2i, 
- i, - 
- i
C. -2i, - 
- i, 
- i
D. -2i, 
+ i, - 
+ i
Answer: D
Mathematics
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Multiply mentally.
A. 9x2 - 
B. 9x2 + 80x - 
C. 9x2 - 80x - 
D. 9x4 - 
Mathematics
Solve the problem by integration.Find the volume generated by revolving the first-quadrant area bounded by 
and 
about the 
A. 
?
B. 
?
C. 
?
D. 
?
Mathematics
Use the fundamental counting principle to count the number of outcomes. A sports shop sold tennis rackets in 3 different weights, 3 types of string, and 4 grip sizes. How many different rackets could they sell?
A. 10 B. 24 C. 27 D. 36
Mathematics
Multiply.(5x - y + 2z)(5x - y - 2z)
A. 25x2 + y2 - 4z2 B. 25x2 + y2 + 20xz + 4yz - 4z2 C. 25x2 - 10xy + y2 - 4z2 D. 25x2 - 10xy + y2 + 20xz + 4yz - 4z2
Mathematics