(本题6分)先化简后求值(1+)(a2-1)其中a=-2
(11·西宁)(本小题满分7分)计算:()-3+(-2011)0-|(-2)3|.
(本题5分)(湖南湘西,17,5分)计算:
计算:│-2│-(π-3.14)0+()-1-2sin60°