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Sticky Note
The imaginary part of complex number 2 - 4i is?
  1. 4
  2. 4i
  3. -4i
  4. -4
Explanation

A complex number is written in the form:

  • a is the real part

  • b is the imaginary part

So in 2 − 4i:

  • Real part = 2

  • Imaginary part = −4

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