Solve z2+2z+5=0z^2 + 2z + 5 = 0z2+2z+5=0 using the quadratic formula.
z=−1±2iz = -1 \pm 2iz=−1±2i
z=1±2iz = 1 \pm 2iz=1±2i
z=−1±iz = -1 \pm iz=−1±i
z=2±iz = 2 \pm iz=2±i