问题
解答题
计算: (1)-2+6÷(-2)×
(2)(-2)3-(1-
|
答案
(1)原式=-2+6×(-
)×1 2
=-2-1 2
=-3 2
;7 2
(2)原式=-8-
×6=-8-4=-12.2 3
计算: (1)-2+6÷(-2)×
(2)(-2)3-(1-
|
(1)原式=-2+6×(-
)×1 2
=-2-1 2
=-3 2
;7 2
(2)原式=-8-
×6=-8-4=-12.2 3