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  • 03-10-2019
  • Mathematics
contestada

Find the zeros of the function and 2x² + 72=0

Respuesta :

jimrgrant1 jimrgrant1
  • 03-10-2019

Answer:

x = ± 6i

Step-by-step explanation:

Given

2x² + 72 = 0 ( subtract 72 from both sides )

2x² = - 72 ( divide both sides by 2 )

x² = - 36 ( take the square root of both sides )

x = ± [tex]\sqrt{-36}[/tex]

  = ±( [tex]\sqrt{36(-1)}[/tex])

  = ±( [tex]\sqrt{36}[/tex] × [tex]\sqrt{-1}[/tex]) → [tex]\sqrt{-1}[/tex] = i

  = ± 6i

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