SOLUTION: evaluate without using imaginary numbers: fourth root of minus 36 fourth root of -36

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Question 1120859: evaluate without using imaginary numbers:
fourth root of minus 36
fourth root of -36
Answer by Alan3354(69443) About Me  (Show Source):
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evaluate without using imaginary numbers:
fourth root of minus 36
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z^4 = -36
z^4 = 36cis(180)
z = sqrt(6)cis(45)
z = sqrt(6)cis(135)
z = sqrt(6)cis(225)
z = sqrt(6)cis(315)
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