[求助]救命啊！如何求解二元4次方程组

dondon82

<P ><FONT face="Times New Roman">G=-1760.9*X<SUB>1</SUB>-10435+3018*X<SUB>1</SUB>*log(X<SUB>1</SUB>)+3018*(1-X<SUB>1</SUB>)*log(1-X<SUB>1</SUB>)+X<SUB>1</SUB>*(1-X<SUB>1</SUB>)*(-16382-75728*X<SUB>1</SUB>+1170*(2*X<SUB>1</SUB>-1)^2);<p></p></FONT></P>
<P ><p><FONT face="Times New Roman"> </FONT></p></P>
<P ><FONT face="Times New Roman">S=11268*X<SUB>2</SUB>-8009+3018*X<SUB>2</SUB>*log(X<SUB>2</SUB>)+3018*(1-X<SUB>2</SUB>)*log(1-X<SUB>2</SUB>)+X<SUB>2</SUB>*(1-X<SUB>2</SUB>)*( -37122-70886*X<SUB>2</SUB>+1170*(2*X<SUB>2</SUB>-1)^2);<p></p></FONT></P>
<P ><p><FONT face="Times New Roman"> </FONT></p></P>
<P ><p><FONT face="Times New Roman"> </FONT></p></P>
<P ><FONT face="Times New Roman">D=-18720*X<SUB>1</SUB>^3+255264*X<SUB>1</SUB>^2-130392*X<SUB>1</SUB>-16973 +3018*log(X<SUB>1</SUB>)-3018*log(1-X<SUB>1</SUB>)<p></p></FONT></P>
<P ><FONT face="Times New Roman">F=-18720*X<SUB>2</SUB>^3+240738*X<SUB>2</SUB>^2-79228*X<SUB>2</SUB>-24684+3018*log(X<SUB>2</SUB>)-3018*log(1-X<SUB>2</SUB>)<p></p></FONT></P>
<P ><p><FONT face="Times New Roman"> </FONT></p></P>
<P ><p><FONT face="Times New Roman"> </FONT></p></P>
<P >求解如下方程组的解<p></p></P>
<P ><FONT face="Times New Roman">(S-G)/( X<SUB>2</SUB>- X<SUB>1</SUB>)= D<p></p></FONT></P>
<P ><FONT face="Times New Roman">D= F<BR><BR>哪位达人救救我，谢了</FONT></P>

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