Write the binomial expansion of the expression.(3x - 2)5
A. 243x5 - 810x4 + 1080x3 - 720x2 + 240x - 32
B. (9x2 - 12x + 4)5
C. 243x5 + 240x4 - 720x3 - 720x2 + 240x - 32
D. 243x5 - 162x4 + 108x3 - 72x2 + 48x - 32
Answer: A
Mathematics
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Show that the set has cardinal number ?0 by establishing a one-to-one correspondence between the natural numbers and the given set. Be sure to indicate the general correspondence.{5, 25, 125, 625, ...}
A.
| 1, | 2, | 3, | 4, | ..., | n, | ... |
| ? | ? | ? | ? | ? |
| 5, | 25, | 125, | 625, | ..., | n5, | ... |
B.
| 1, | 2, | 3, | 4, | ..., | n, | ... |
| ? | ? | ? | ? | ? |
| 5, | 25, | 125, | 625, | ..., | 52n, | ... |
C.
| 1, | 2, | 3, | 4, | ..., | n, | ... |
| ? | ? | ? | ? | ? |
| 5, | 25, | 125, | 625, | ..., | 5n, | ... |
D.
| 1, | 2, | 3, | 4, | ..., | n, | ... |
| ? | ? | ? | ? | ? |
| 5, | 25, | 125, | 625, | ..., | 5n, | ... |
Mathematics
Solve the problem.Find 
x
A. 7 B. 0 C. 49 D. Does not exist
Mathematics
If the statement is true for all sets C and D, write "true." If it is not true for all sets C and D, write "false." Assume that C ? ?, U ? ?, and C ? U.C ? U
A. True B. False
Mathematics
Find the absolute value.
A. -23 B. 46 C. 23 D. 0
Mathematics