计算:
(1) | - 3 | + ( 1 2 ) - 1 - ( 2019 ) 0 ;
(2) 2 a 3 · a 3 - ( a 2 ) 3 .
计算:-(cos30°-1) 0-82×0.1252.
(8分)计算:
(本题5分)计算:|-2|-(3-π)0+2.
计算:.
计算: