问题
解答题
计算 (1)(-2)3+(-3)×[-22-(-1)] (2)(-125
|
答案
(1)原式=-8-3×(-4+1)
=-8-3×(-3)
=-8+9
=1;
(2)原式=(-125-
)×5 7 1 5
=-125×
-1 5
×5 7 1 5
=-25-1 7
=-25
.1 7
计算 (1)(-2)3+(-3)×[-22-(-1)] (2)(-125
|
(1)原式=-8-3×(-4+1)
=-8-3×(-3)
=-8+9
=1;
(2)原式=(-125-
)×5 7 1 5
=-125×
-1 5
×5 7 1 5
=-25-1 7
=-25
.1 7