Question 1109765
{{{ Zeq = 1/((1/Z[1])+(1/Z[2])) =  Z[1]Z[2] / (Z[1]+Z[2]) }}}

Equivalent admittance is  {{{ Mho[eq] = ( 1/Z[eq] ) = (Z[1]+Z[2])/(Z[1]Z[2]) }}}


{{{ Mho[eq] = ((10-j2)+(5+j2)) / ((10-j2)(5+j2)) }}}
= {{{ cross(15/(54-j10)) }}} <<<— should read {{{ 15/(54+j10) }}}
= {{{  15(54-j10)/((54+j10)(54-j10)) }}}
=  {{{  (810-j150)/3016 }}}
= {{{ highlight( ((405-j75)/1508)) }}}  mhos
or approx  {{{ highlight(0.268568 -  j*0.049735) }}} mhos