(2根衡中号2+3)^2005次方乘以(2根号2-3)^2006次方= (2根号2+3)^2005次方乘以(2根号2-3)^2005次方再乘以(2根号2-3)^1=【（2根号2+3）乘以(2根号2-3)】^2005乘基历以(2根号2-3)^1=[（2根号2）^2-3^2]^2005乘以(2根号2-3)=【8-9】搏拦搜^2005乘以(2根号2-3)=（-1）^2005乘以(2根号2-3)=-1乘以(2根号2-3)=3-2根号2
(2根号2+3)^2005次方拿空乘以(2根号2-3)^2006次方
=(2根备敏孙号2+3)^2005次方乘以(2根号2-3)^2005次方×(2√2-3)
=[(2根号2+3)乘以(2根号2-3)]^2005次方×(2√2-3)
=[8-9]^2005次仿链方×(2√2-3)
=3-2√2
