donjon04
donjon04 donjon04
  • 12-06-2016
  • Mathematics
contestada

Solve the following quadratic equation by the square root property of equality.

x2 - 81 = 0

Respuesta :

georgiatrn
georgiatrn georgiatrn
  • 12-06-2016
x² - 81 = 0
x² = 81
x = √81
x = 9
Answer Link
jpalomino5 jpalomino5
  • 26-01-2021

Answer:

x=9 x=-9

Step-by-step explanation:

[tex]x^{2}[/tex]-81=0

  +81 +81

[tex]x^{2}[/tex]=81

[tex]\sqrt{x^{2} }[/tex]=[tex]\sqrt{81}[/tex]

x=±9

the person above me was right just didn't finish putting it all in.

Answer Link

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