2-[1-(1/2×2/3-1)]×(-0.75)²＋(-0.5)³×5²
答案:3 悬赏:10 手机版
解决时间 2021-11-30 17:47
- 提问者网友：浪荡绅士
- 2021-11-30 06:32
2-[1-(1/2×2/3-1)]×(-0.75)²＋(-0.5)³×5²
最佳答案
- 五星知识达人网友：夜余生
- 2021-11-30 07:16
2-[1-(1/2×2/3-1)]×(-0.75)²＋(-0.5)³×5²
=2-(1+2/3)×9/16-1/8×25
=2-15/16-8/25
=547/400
不懂可追问，有帮助请采纳，谢谢！追问1/8×25=25/8不是吗追答我的错
2-[1-(1/2×2/3-1)]×(-0.75)²＋(-0.5)³×5²
=2-(1+2/3)×9/16-1/8×25
=2-15/16-25/8
=-33/16
=2-(1+2/3)×9/16-1/8×25
=2-15/16-8/25
=547/400
不懂可追问，有帮助请采纳，谢谢！追问1/8×25=25/8不是吗追答我的错
2-[1-(1/2×2/3-1)]×(-0.75)²＋(-0.5)³×5²
=2-(1+2/3)×9/16-1/8×25
=2-15/16-25/8
=-33/16
全部回答
- 1楼网友：孤独的牧羊人
- 2021-11-30 07:58
- 2楼网友：逐風
- 2021-11-30 07:51
2-[1-(1/2×2/3-1)]×(-0.75)²＋(-0.5)³×5²
=2-5/3*9/16-1/8*25
=2-15/16-25/8
=2-15/16-50/16
=2-65/16
=-33/16
=-2又1/16
=2-5/3*9/16-1/8*25
=2-15/16-25/8
=2-15/16-50/16
=2-65/16
=-33/16
=-2又1/16
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