cgarcia0476 cgarcia0476
  • 10-10-2021
  • Mathematics
contestada

The equation x2 − 9 = 0 has real solution

Respuesta :

jimthompson5910 jimthompson5910
  • 10-10-2021

Answers:    x = 3 or x = -3

Work Shown:

x^2 - 9 = 0

x^2 - 3^2 = 0

(x-3)(x+3) = 0 ..... difference of squares rule

x-3=0 or x+3=0

x = 3 or x = -3

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