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DelcxtYT
Answer: The square root of a negative number can be expressed as an imaginary number. 

Step-by-step explanation
No square root can be taken of a negative number within the system of real numbers because squares of all real numbers are non-negative.

Answer:

imaginary form

Step-by-step explanation:

So how we represent?

Let a number be -9

Find square root

  • √-9
  • √9(-1)
  • 3√-1
  • 3i

So

i stands for iota and has value √-1

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