问题
解答题
计算题 (1)(-2)3+2×(-3)2 (2)4
|
答案
(1)原式=-8+2×9=-8+18=10;
(2)原式=
÷(-9×9 2
-0.8)÷(-51 9
)=1 4
×(-9 2
)×(-5 9
)=4 21
.10 21
计算题 (1)(-2)3+2×(-3)2 (2)4
|
(1)原式=-8+2×9=-8+18=10;
(2)原式=
÷(-9×9 2
-0.8)÷(-51 9
)=1 4
×(-9 2
)×(-5 9
)=4 21
.10 21