(1)计算: ( - 3 ) 2 - ( 1 5 ) - 1 - 8 × 2 + ( - 2 ) 0
(2)先化简,再求值: 2 x 2 - 2 x x 2 - 1 - x x + 1 ,其中 x = - 2 .
计算 (1) (2) (3)
计算:(1) (2)
计算: (1) (2).
计算: (1)-(-2)2+ (2)|
计算: