Respuesta :

SaniShahbaz

Explanation:

Note: As you haven't clearly specified the answer choices. But, I am assuming one of the answer choices may have included some negative number under a square root, as a real number cannot have a negative number under a square root. So, whatever the choice may have contained the negative number under a square root would represent the complex number. Anyhow, I would try to clear your concept.

So, lets move forward.

A complex number is basically the combination of a real number and imaginary number which can be expressed in the form of [tex]a+ib[/tex]. where a and b are termed as real numbers and i is a solution of the equation x² = -1.

So,

In  [tex]a+ib[/tex],

  • "i" is called iota.
  • [tex]i=\sqrt{-1}[/tex]

For example, let us consider

[tex]2 + \sqrt{-1}[/tex]

  • Here, 2 is a real part,
  • And [tex]\sqrt{-1}[/tex] is imaginary part, meaning [tex]i=\sqrt{-1}[/tex], which is imaginary part.

Therefore, [tex]2 + \sqrt{-1}[/tex] is a complex number.

Keywords: complex number, iota

Learn more about complex numbers from brainly.com/question/12382226

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