Simplify the power of i.i-22
A. -1
B. -i
C. i
D. 1
Answer: A
Mathematics
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A. 7
B. 
C. 
D. 9
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, 
A. 40x4y2 B. 40xy C. 40x4y3 D. 40xy3
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A. Sometimes true B. Never true C. Always true
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