计算:-3tan60°++;
(1)计算:;(2)化简:(a+3)2+a(2﹣a).
(11·西宁)(本小题满分7分)计算:.
计算: 12 - - 1 2 - 1 - tan 60 ° + - 8 3 + 3 - 2
计算: ( - 3 ) - 3 + ( - 2011 ) 0 - | ( - 2 ) 3 |
(11·西宁)(本小题满分7分)计算:()-3+(-2011)0-|(-2)3|.