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SOLUTION: hope someone could help (-i)^4 "i" is an imaginary number What is the correct solution? 1. i 2. -i 3. 1 4. -1
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Question 147802
:
hope someone could help
(-i)^4 "i" is an imaginary number
What is the correct solution?
1. i
2. -i
3. 1
4. -1
Answer by
scott8148(6628)
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i is the square root of -1, so i^2 is -1
(-i)^4=[(-i)^2][(-i)^2] __ squaring __ (-i)^4=(i^2)(i^2) __ squaring __ (-i)^4=(-1)(-1) __ multiplying __ (-i)^4=1