ceciliay503
ceciliay503 ceciliay503
  • 09-09-2019
  • Mathematics
contestada

(x-5)^2=81, solve for x

Respuesta :

sqdancefan
sqdancefan sqdancefan
  • 09-09-2019

Answer:

  x ∈ {-4, 14}

Step-by-step explanation:

Take the square root and add 5.

  (x -5) = ±√81 = ±9

  x = 5 ± 9

  x ∈ {-4, 14} . . . . . . x may be either of -4 or 14

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