赚现金
计算: ( 2 - 2 ) 0 + ( - 1 2 ) - 2 + 2 sin 45 ° - 8 .
计算: | - 5 | - ( π - 2020 ) 0 + 2 cos 60 ° + ( 1 3 ) - 1 .
(1)计算: ( 2 - 2 ) 0 + ( 1 3 ) - 1 - 2 cos 60 ° ;
(2)化简: ( 1 + 1 x - 1 ) ÷ x x 2 - 1 .
计算或化简:
(1) 8 - ( 3 - π ) 0 - 4 cos 45 ° ;
(2) a 2 a - 1 + 1 1 - a .
计算: | - 2 | + ( sin 36 ° - 1 2 ) 0 - 4 + tan 45 ° .
计算: | - 2 | - 2 cos 60 ° + ( π - 2020 ) 0 .
计算:
(1) π 0 - 9 + ( 1 3 ) - 2 - | - 5 | ;
(2) x 2 - 16 x + 4 ÷ 2 x - 8 4 x .
(1) | - 3 | + ( 1 2 ) - 1 - ( 2019 ) 0 ;
(2) 2 a 3 · a 3 - ( a 2 ) 3 .
(1)计算: 12 - 4 sin 60 ° + ( 2020 - π ) 0 .
(2)解不等式组: x + 2 > - 1 , 2 x - 1 3 ⩽ 3 ·
计算: ( 1 2 ) - 1 - ( π - 1 ) 0 + | 1 - 3 | .
计算: ( 3 ) 2 + | - 2 | - ( π - 2 ) 0
计算: 2 2 - ( 3 - 1 ) 0 = .
计算 ( - 1 ) × 2 + 4 + ( 1 3 ) - 1 .
(1) 4 - tan 45 ° - ( 1 - 2 ) 0 ;
(2) ab ( 3 a - 2 b ) + 2 a b 2 .
(1) π 0 + ( 1 2 ) - 1 - ( 3 ) 2 ;
(2) ( x - 1 ) ( x + 1 ) - x ( x - 1 ) .
试题篮