Respostas

  • Usuário do Brainly
2014-08-22T17:38:29-03:00
\dfrac{x^2}{3}-\dfrac{3-x^2}{6}=\dfrac{1}{2}.

\dfrac{2x^2-3+x^2}{6}=\dfrac{1}{2}.

\dfrac{x^2-3}{6}=\dfrac{1}{2}

\dfrac{x^2-3}{6}=\dfrac{3}{6}

x^2-3=3

x^2=6~~\Rightarrow~~x=\pm\sqrt{6}.

\text{Alternativa D}
Muito Obg! Pra achar esse 6 eu tenho q tirar o mmc, né?
Sim ^^
Ah, ok. Obrigado