Question

$x^{2} -2x+5=0$

Answer 1

raízes complexas:

∆=(-2)² -4.1.5= -16 = 16i² => √∆= 4i

x' = -b+√∆/2a = 2+4i/2 = 1+2i ✓

x" = 1-2i ✓