<P>남정훈 선생님의 답글입니다.</P> <P> </P> <P>자의적으로 문제를 해석하면</P> <P> <OBJECT class=MATH classid=clsid:70E4BF88-2729-4A46-8794-D459BAC0EB63 width=105 align=absMiddle height=45><PARAM NAME="_cx" VALUE="2778"><PARAM NAME="_cy" VALUE="1190"><PARAM NAME="BackColor" VALUE="4063280"><PARAM NAME="Enabled" VALUE="-1"><PARAM NAME="Script" VALUE="[0]#wh4/23.7`9.6/12,[1]{{lrbracket`2a-{1}/{4b}`plus`c`rrbracket}^{8}}/{#xc333333}"><PARAM NAME="FontSize" VALUE="12"><PARAM NAME="FontColor" VALUE="3355443"><PARAM NAME="Editable" VALUE="0"><PARAM NAME="Measurable" VALUE="0"></OBJECT>을 묻는 문제 같군요</P> <P> </P> <P>이 때 이항정리(수학1과정입니다)를 사용해 보면</P> <P> <OBJECT class=MATH classid=clsid:70E4BF88-2729-4A46-8794-D459BAC0EB63 width=148 align=absMiddle height=45><PARAM NAME="_cx" VALUE="3915"><PARAM NAME="_cy" VALUE="1190"><PARAM NAME="BackColor" VALUE="7209065"><PARAM NAME="Enabled" VALUE="-1"><PARAM NAME="Script" VALUE="[0]#wh4/35.3`9.6/12,[1]{{8!}/{3!2!3!}{lrbracket`2a`rrbracket}^{3}`lrbracket`{{-1}/{4b}`rrbracket}^{2}{(c)}^{3}}/{#xc333333}"><PARAM NAME="FontSize" VALUE="12"><PARAM NAME="FontColor" VALUE="3355443"><PARAM NAME="Editable" VALUE="0"><PARAM NAME="Measurable" VALUE="0"></OBJECT>이 됩니다 </P> <P>이것을 계산하면 (a^3*c^3)/(b^2)의 계수는 280이 됩니다.</P>
