(1)计算: ( - 3 ) 2 - ( π - 1 ) 0 + tan 60 ∘ + | 3 - 2 | ;
(2)解不等式组 2 ( x - 1 ) ≤ 3 x + 1 ⋯ ① 1 2 x ≤ 8 - 3 2 x ⋯ ② ,并把解集在数轴上表示出来.
(1)计算:3(–π)0– + (–1)2011
计算:(1)2×(-5)+23-3÷.
(2)先化简,再求值: – ,其中x = –3