Beddingfield510 Beddingfield510
  • 20-06-2015
  • Mathematics
contestada


Which equation has the same solution as x^2 - 6x - 12 = 0?
(1) (x + 3)^2 = 21 (3) (x + 3)^2 = 3
(2) (x - 3)^2 = 21 (4) (x - 3)^2 = 3

Respuesta :

crisforp
crisforp crisforp
  • 20-06-2015
(2)
Because ( x - 3 )^2 = x^2 - 6x + 9 ;
               x^2 - 6x + 9 = 21 ;
               x^2 - 6x - 12 = 0 ;
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