答:
x²-x-1=0
x²=x+1
x=(1±√5)/2
2013+2x-3x³
=2013+2x-3(x+1)x
=2013+2x-3x²-3x
=-4x²+x²-x-1+2014
=-4(x+1)+0+2014
=-4x-4+2014
=-4x+2010
=-2±2√5+2010
=2008±2√5亲,我才初一,看不懂,不过,谢谢能在回答一下吗?x²-x-1=0x²-2*(1/2)x+(1/2)²-5/4=0(x-1/2)²=5/4=(±√5/2)²x-1/2=±√5/2x=1/2±√5/2x=(1±√5)/2我们没学根号啊!!没有学过做不了这道题目....你学习超前了