sherividourek71 sherividourek71
  • 10-07-2020
  • Mathematics
contestada

Please show all work. solve for the variable. x2−8=−1

Respuesta :

ChillMuse
ChillMuse ChillMuse
  • 10-07-2020

[tex]x^{2} -8=-1[/tex]

[tex]x^{2} = -1 + 8[/tex]

[tex]x^{2} = 7[/tex]

x = ±[tex]\sqrt{7}[/tex]

Answer Link
wegnerkolmp2741o
wegnerkolmp2741o wegnerkolmp2741o
  • 10-07-2020

Answer:

x = ±sqrt(7)

Step-by-step explanation:

x^2−8=−1

Add 8 to each side

x^2−8+8=−1+8

x^2 = 7

Take the square root of each side

sqrt(x^2) = ±sqrt(7)

x = ±sqrt(7)

Answer Link

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