browndaisha9
browndaisha9 browndaisha9
  • 12-04-2017
  • Mathematics
contestada

Solve
x2 - 49 = 0

A) ±49
B) ±12
C) ±7
D) ±6

Respuesta :

essembly essembly
  • 12-04-2017
C, x = +-7. Difference of squares
Answer Link
Аноним Аноним
  • 12-04-2017
x2 - 49 = 0     factor this:0
(x + 7)(x - 7) = 0

x = +/- 7
Answer Link

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