Find all specified roots.Cube roots of 1.

A. 1, -  + i, -  - i
B. -1, 1
C. 1,  + i, -  + i
D. 1,  - i, -  - i


Answer: A

Mathematics

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Translate the sentence into an equation and solve it.The sum of fifteen and four times n is the same as the difference between three times n and seven. Find n.

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Mathematics