已知x-1x=1,则x2x4+2007x2+1=______.-数学

题目简介

已知x-1x=1,则x2x4+2007x2+1=______.-数学

题目详情

已知x-
1
x
=1,则
x2
x4+2007x2+1
=______.
题型:填空题难度:偏易来源:不详

答案

∵x-class="stub"1
x
=1,
∴x2+class="stub"1
x2
-2=1,
∴x2+class="stub"1
x2
=1+2=3,
x2
x4+2007x2+1
=class="stub"1
x2+2007+class="stub"1
x2
=class="stub"1
2007+3
=class="stub"1
2010

故应填:class="stub"1
2010

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