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Sagot :
Answer:
D. i
Step-by-step explanation:
When putting i to a power, there is a rule.
i¹ = i
i² = -1
i³ = -i
i⁴ = 1
And it repeats again, such as:
i⁵ = i
i⁶ = -1
And so forth.
This rule also applies to -i, but the values are slightly different:
(-i)¹ = -i
(-i)² = -1
(-i)³ = i
(-i)⁴ = 1
And that one keeps repeating such as
(-i)⁵ = -i
(-i)⁶ = -1
And so forth.
So to answer your question, (-i)³ = i.
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