monse108 monse108
  • 16-10-2019
  • Mathematics
contestada

How do you take the square root of a negative number?

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Numinum
Numinum Numinum
  • 16-10-2019

Answer:

It is not possible to take the square root of a negative number, but you can use imaginary numbers

square root of -16= 4i

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cinderofsoulsss
cinderofsoulsss cinderofsoulsss
  • 16-10-2019

use the imaginary number: [tex]\sqrt{-1}[/tex] = i

[tex]\sqrt{-20}[/tex]

[tex]\sqrt{(-1)*2*2*5}[/tex]

2×i[tex]\sqrt{5}[/tex]

2i[tex]\sqrt{5}[/tex]

another example:

[tex]\sqrt{-4}[/tex]

[tex]\sqrt{(-1)*2*2}[/tex]

2 × i

2i

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