Question

resolver numeros complexos 2x²+98=0

Answer 1

2x^2+98=0⇔

2x^2=-98⇔

x^2=-98/2⇔

x^2=-49⇔

x=+ou -√-49⇔

como i^2=-1, temos⇔

x=√49i^2⇔

x'=7i⇔

x"=-7i