Perform the indicated operation. Write the result in the form a + bi.(9 - 9i)(8 + 2i)
A. 90 + 54i
B. -18i2 - 54i + 72
C. 90 - 54i
D. 54 - 90i
Answer: C
Mathematics
You might also like to view...
Find the area of the surface generated when the given curve is revolved about the y-axis.y = (3x)1/3, for 
? x ? 9
A. 
(823/2 - 23/2)
B. 
(823/2 - 23/2)
C. 
(823/2 - 1)
D. 
(823/2 - 23/2)
Mathematics
Evaluate the integral.
A. 
esin-16x + C
B. 
ecos-16x + C
C. - 
ecos-16x + C
D. 6esin-16x + C
Mathematics
Factor by grouping.15a3 + 12a2b - 25ab2 - 20b3
A. (3a2 + 5b2)(5a - 4b) B. (3a2 - 5b2)(5a + 4b) C. (15a2 - 5b2)(a + 4b) D. (3a2 - 5b)(5a + 4b)
Mathematics
Sketch D and g(D) from the description of D and change of variables 
x = 3u, y = 
v where D is the rectangle 0 ? u ? 2, 1 ? v ? 4 
?
A.
 ? |  |
B.
 ? |  |
C.
 ? |  |
D.
 ? |  |
Mathematics