(2倍根号2-3)2011次方×(2倍根号2+3)2012次方,-3和+3不在根号2内!
问题描述:
(2倍根号2-3)2011次方×(2倍根号2+3)2012次方,-3和+3不在根号2内!
答
原式=[(2根号2-3)*(2根号2+3)]^2011*(2根号2+3)
=(-1)^2011*(2根号2+3)
=-2根号2-3