«
  
»

ajude 9x²-49=0



RESOLVENDO

Temos que:

\( 9\text{x}^2-49=0 \)

Isolando o \( \text{x}^2 \):

\( \text{x}^2=\dfrac{49}{9} \)

\( \text{x}=\pm\sqrt{\dfrac{49}{9}}=\pm\dfrac{7}{3} \)

Logo, \( \text{S}=\{\pm\frac{7}{3}\} \)

Basta vc isr o X²

\( < span>9x^2-49=0 \)


\( 9x^2=49 \)
\( x^2=< span>\frac{49}{9}</span> \)


\( x=\</span>±\sqrt{\frac{49}{9}} \)

\( x=\±\frac{7}{3}</p> < p> </p> < p> \Large{\boxed{x=\{-\frac{7}{3},\frac{7}{3}\}}} \)



TAREFAS SIMILARES: