2+(-1)2012+(根号2+1)(根号2-1)-l-3x3分之1l
问题描述:
2+(-1)2012+(根号2+1)(根号2-1)-l-3x3分之1l
答
2+(-1)^2012+(根号2+1)(根号2-1)-|-3×(1/3)|
=2+1+(根号2)^2-1-|-1|
=3+2-1-1
=3.