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Operations with Complex Numbers

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  • What is the complex conjugate of -5i?
    5i
  • Simplify i^27
    -i
  • -6i(3 - 2i)
    -12 - 18i
  • Simplify 2i(8i)
    -16
  • What complex number is graphed?
    2 - i
  • Simplify √-121
    11i
  • What is the complex conjugate of -6 + 3i?
    -6 - 3i
  • Simplify √-25
    5i
  • Simplify (1 + 4i)(1 - 4i)
    17
  • Simplify i^45
    i
  • What complex number is graphed?
    3i
  • Simplify 5/(2-i)
    (10+5i)/5 = (2 + i)
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