当x=-2时，原式=4-2-6=-4．
洪仁玕在《资政新篇》中指出：倘有百万家财者，先将家资契式禀报入库，然后准颁一百五十万银纸，刻以精细花草，盖以国印图章，或银货相易，或纸银相易，皆准每两取息三厘。此举大利于商贾士民，出入便于携带。这段材料反映了( )
Judging from the message they convey, these two chapters are __________ independent of each other, that is, they are not in connection with the other at all.
