5a2-[a2+(5a2-2a)-2(a2-3a)]
答案:2 悬赏:80 手机版
解决时间 2021-11-17 10:42
- 提问者网友：咪咪
- 2021-11-16 21:02
5a2-[a2+(5a2-2a)-2(a2-3a)]
最佳答案
- 五星知识达人网友：冷風如刀
- 2021-11-16 22:33
5a2-[a2+(5a2-2a)-2(a2-3a)]
=5a2-(a2+5a2-2a-2a2+6a)
=5a2-(4a2+4a)
=5a2-4a2-4a
=a2-4a
=5a2-(a2+5a2-2a-2a2+6a)
=5a2-(4a2+4a)
=5a2-4a2-4a
=a2-4a
全部回答
- 1楼网友：慢性怪人
- 2021-11-16 23:35
5a²-[a²+(5a²-2a)-2(a²-3a)]
=5a²-[(a²+5a²-2a)-2a²+6a]
=5a²-(a²+5a²-2a-2a²+6a)
=5a²-a²-5a²+2a+2a²-6a
=a²-4a
=5a²-[(a²+5a²-2a)-2a²+6a]
=5a²-(a²+5a²-2a-2a²+6a)
=5a²-a²-5a²+2a+2a²-6a
=a²-4a
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