计算: ( 1 2 ) - 1 - ( π - 1 ) 0 + | 1 - 3 | .
计算 (1)(2)
-24+[(-4)2-(1-32)×2]
(本题16分)计算: ⑴ ⑵ (3) -14×(-2)+(-5)×2+4× (4)
已知,求的值,
计算:,