Question

quero a resposta de x2+196=0

Answer 1

$x^{2} +196=0\to\\\\ x^2=-196\to\\\\ x=\pm~ \sqrt{-196} \to\\\\ x= \pm~ \sqrt{-1*196} \to\\\\ x= \pm~ \sqrt{-1} * \sqrt{196} \to\\\\ x= \pm~ i*14 \to\\\\ x= \pm~ 14i\\\\\\\\ \large\boxed{S=\{-14i~;~14i\}}$