Respostas

2013-11-17T19:22:53-02:00
  • Usuário do Brainly
2013-11-17T19:27:22-02:00
- 9 x^{2} = 5 - 6
- 9 x^{2} = - 1 .(-1)
9 x^{2} = 1
 x^{2} = 1/9
x = +-  \sqrt{1/9}
x = +-  \frac{1}{3}

x = +  \frac{1}{3}
x = -  \frac{1}{3}


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