Respuesta :

wegnerkolmp2741o

Answer:

x = +sqrt(81)

x = -sqrt(81)

Step-by-step explanation:

x^2 = 81

Take the square root of each side

sqrt(x^2) = ±sqrt(81)

x = ±sqrt(81)

amna04352

Answer:

C and D

Step-by-step explanation:

x² = 81

x = +/- sqrt(81)

x = +/- 9

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