2.06 Quiz Imaginary Numbers

Question: Which expression is equal to 2√-28

Answer: 4i√7

Question: Which answer is equal to i^58

Answer: -1

Question: Simplify 0.4i − i

Answer: -0.6i

Question: Simplify −2i ∙ (-2i)

Answer: -4

Question: Simplify −2i√-12

Answer: 4√3

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