Question 1136615
{{{ Z^2 + j*z + 2 = 0 }}}
{{{ z^2 + j*z + (j/2)^2 = -2 + (j/2)^2 }}}
{{{ ( z + j/2 )^2 = -2 + (j/2)^2 }}}
{{{ z  = -j/2 + sqrt( -2 + (j/2)^2 )  }}}
and
{{{ z = -j/2 -sqrt( -2 + (j/2)^2 ) }}}