问题
解答题
计算:(每题至少写两步) (1)-12+(-2)3×
(2)(3
|
答案
(1)原式=-1-8×
-(-3)×(-1 8
)=-1-1-1=-3;1 3
(2)原式=(3
)2-(22
)2=18-12=6.3
计算:(每题至少写两步) (1)-12+(-2)3×
(2)(3
|
(1)原式=-1-8×
-(-3)×(-1 8
)=-1-1-1=-3;1 3
(2)原式=(3
)2-(22
)2=18-12=6.3