Question

o conjunto verdade de 3 + 2 barra x menos 1 Barra X elevado a 2 = 0 é

Answer 1

$3 + \frac{2}{x} -\frac{1}{x^{2}} = 0 \\ 3x^{2} + 2x -1 = 0 \\ \\ \mathsf{\Delta=b^2-4ac} \\\mathsf{2^{2}-(4 * -1 * 3)} \\ 4 +12 = 4^{2} \\ \\ \mathsf{x = \frac{-b \pm \sqrt{\Delta} }{2a}}\\ \frac{-2 \pm 4}{6}$

x' = (-2 + 4)/6

x' = 1/3

x'' = (-2 -4)/6

x'' = -1

$\boxed{\mathsf{V = {\frac{1}{3} , -1} }}$