Respostas

  • Dsr
  • Ambicioso
2013-05-16T19:19:42-03:00

(x+2)^2 -9 = 0

 x^2 + 4x  -5  = 0 D = - 4 +/-\sqrt[2]{4^2-4*1*-5}/2 resolve a raiz e encontra a resposta^^

 

 x = - 4 +/- \sqrt[2]{16+20}/2

 

x = -4 + 6/ 2 = 1 x = -4-6/2= -5

 

 

obs: D é delta rsrsrs

 

 

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