Respuesta :
Graph it or solve 2x^2 = 1, x=+-1/Sqrt(2) = +-0.707
and the same for y.
Points are (-.707, -.707) and (.707,.707) or (1/Sqrt(2).....
and the same for y.
Points are (-.707, -.707) and (.707,.707) or (1/Sqrt(2).....