问题
解答题
计算: (1)(
(2)2×(-3)2-5÷
|
答案
(1)原式=
×(-12)+1 3
×(-12)-1 6
×(-12)1 2
=-4-2+6
=0;
(2)原式=2×9-5×2×2
=18-20
=-2.
计算: (1)(
(2)2×(-3)2-5÷
|
(1)原式=
×(-12)+1 3
×(-12)-1 6
×(-12)1 2
=-4-2+6
=0;
(2)原式=2×9-5×2×2
=18-20
=-2.