Seudónimo Seudónimo
  • 02-07-2020
  • Mathematics
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Please help me figure this out! Thank you so much :( i really need it! ❤️

Please help me figure this out Thank you so much i really need it class=

Respuesta :

sqdancefan
sqdancefan sqdancefan
  • 11-07-2020

Answer:

  [tex]\textbf{A. }x=2i\text{ or }x=-2i\\\\\textbf{B. }(x+2i)(x-2i)[/tex]

Step-by-step explanation:

The quadratic can be solved in a straightforward way:

  [tex]x^2+4=0\\\\x^2=-4\qquad\text{subtract 4}\\\\x=\pm\sqrt{-4}\qquad\text{take the square root}\\\\x=\pm2i\qquad\text{simplify}[/tex]

This tells you that the solutions are ...

  2i or -2i

__

For each root of "a", (x -a) is a factor. Thus the factors of the equation are ...

  (x +2i)(x -2i)

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