Respostas

  • Usuário do Brainly
2014-07-10T21:31:53-03:00
(x+1).x!=x!+6x
x!(x+1)-x!=6x
x![x+1 - 1 ]6x
x!.x=6x
x!=6
x!=3.2.1
~~x=3  [b]
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