问题
解答题
计算: (1)2×(-5)+22-3÷
(2)-(-3)2-3+0.4×[(-1
|
答案
(1)原式=-10+4-6
=-12;
(2)原式=-9-3+
×(-2 5
)×3 2 1 (-2)
=-12-
×(-3 5
)1 2
=-11.7.
计算: (1)2×(-5)+22-3÷
(2)-(-3)2-3+0.4×[(-1
|
(1)原式=-10+4-6
=-12;
(2)原式=-9-3+
×(-2 5
)×3 2 1 (-2)
=-12-
×(-3 5
)1 2
=-11.7.