赚现金
(1)计算: | - 2 | - 2016 0 + 1 2 - 2
(2)解不等式组: 2 3 x > 5 - x x + 2 > 2 x - 3 .
计算: - | - 1 | + 12 ⋅ cos 30 ∘ - - 1 2 - 2 + ( π - 3 . 14 ) .
计算: 8 3 -4 - ( 1 2 ) -2 = .
计算: | - 2 | + 9 × ∣ 1 2 - 1 - 4 × 1 2 - ( π - 1 ) 0 .
(1)计算: | 1 - 3 | + 3 tan 30 ∘ - ( 3 - 5 ) 0 - - 1 3 - 1 .
(2)解不等式组 2 x + 1 > 0 ① 2 - x 2 ≥ x + 3 3 ② .
计算: ( - 1 ) 2016 + 2 sin 60 ∘ - | - 3 | + π 0 .
计算: | 1 - 3 | - 12 = .
计算: | 3 - 2 | + ( 2015 - 1 ) 0 + 2 sin 45 ∘ - 2 cos 30 ∘ + 1 2015 - 1 .
计算: 81 - 2016 0 - 1 - 5 ∣ + 1 2 - 1 .
计算: 5 5 - | 2 - 5 | + ( - 2 ) - 2 - ( π - 3 . 14 ) 0 .
计算
(1)计算: 1 2 - 2 + | 3 - 2 | + 3 tan 30 ∘
(2)先化简,再求值 1 x + 1 - 3 - x x 2 - 6 x + 9 ÷ x 2 + x x - 3 ,其中 x=﹣ 3 2 .
计算: ( π - 2017 ) 0 + 6 sin 60 ∘ - | 5 - 27 | - 1 2 - 2 .
(1)计算: | 2 - 5 | - 2 1 8 - 10 2 + 3 2 ;
(2)先化简,再求值: x - 2 x 2 + 2 x ÷ x 2 - 4 x + 4 x 2 - 4 + 1 2 x ,其中 x=﹣ 6 5 .
计算: ( π - 3 . 14 ) 0 - 2 3 sin 60 ∘ - - 1 2 - 1 = .
先化简再求值:
a - 6 a 2 - 4 - 3 a + 2 ÷ a a - 2 ,其中 a= 2017 0 + - 1 5 - 1 + 27 tan 30 ∘ .
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