Question

como resolver essa equaçao imaginaria 5x²+5=0

Answer 1

$5 x^{2} +5=0\to \\\\\\ 5 x^{2} =-5\to \\\\ x^{2} = \frac{-5}{5} \to \\\\ x^{2} =-1\to \\\\ x=\pm \sqrt{-1} \to \\\\ x=\pm i\\\\\\ S=(-i;+i)$