已知x=(1+√2009)\2,求(4x^2-4x-2007)^2008
问题描述:
已知x=(1+√2009)\2,求(4x^2-4x-2007)^2008
答
=[(2x-1)^2-2008]^2008
=[(1+√2009-1)^2-2008]^2008
=[2009-2008]^2008
=1