问题
解答题
计算: (1)-8+15×(-
(2)(-2)2×5-(-2)3÷4. |
答案
(1)-8+15×(-
)2 3
=-8-10
=-18;
(2)(-2)2×5-(-2)3÷4
=4×5+8÷4
=20+2
=22.
计算: (1)-8+15×(-
(2)(-2)2×5-(-2)3÷4. |
(1)-8+15×(-
)2 3
=-8-10
=-18;
(2)(-2)2×5-(-2)3÷4
=4×5+8÷4
=20+2
=22.