4t²-48t+144=4(t-6)²,这究竟怎么化简的
答案:6 悬赏:10 手机版
解决时间 2021-12-04 03:17
- 提问者网友:孤山下
- 2021-12-03 18:59
4t²-48t+144=4(t-6)²,这究竟怎么化简的
最佳答案
- 五星知识达人网友:毛毛
- 2021-12-03 19:14
解由4t^2-48t+144
=4(t^2-12t+36)
=4(t^2-2×6×t+6^2)
=4(t-6)^2追问4(t^2-2×6×t+6^2)求仔细说明……追答4t^2-48t+144
=4(t^2-12t+36)
=4(t^2-2×6×t+6^2).......(这一步用的理论为a^2-2ab+b^2=(a-b)^2)
=4(t-6)^2
=4(t^2-12t+36)
=4(t^2-2×6×t+6^2)
=4(t-6)^2追问4(t^2-2×6×t+6^2)求仔细说明……追答4t^2-48t+144
=4(t^2-12t+36)
=4(t^2-2×6×t+6^2).......(这一步用的理论为a^2-2ab+b^2=(a-b)^2)
=4(t-6)^2
全部回答
- 1楼网友:一袍清酒付
- 2021-12-04 00:49
4t²-48t+144
=4(t²-12t+36)
=4(t-6)²
=4(t²-12t+36)
=4(t-6)²
- 2楼网友:独钓一江月
- 2021-12-03 23:14
4(t²-12t+36)=4(t-6)²)
- 3楼网友:躲不过心动
- 2021-12-03 21:37
4t²-48t+144=(2t-6)²
4t²-48t+144=4t²-48t+36
然后就剩下144=36 可见 题目错误
4t²-48t+144=4t²-48t+36
然后就剩下144=36 可见 题目错误
- 4楼网友:平生事
- 2021-12-03 20:40
原式=(2t-12)²
={2(t-6)}²
=4(t-6)²
={2(t-6)}²
=4(t-6)²
- 5楼网友:上分大魔王
- 2021-12-03 20:33
根据公式(a+b)²=a²+2ab+b²
4(t-6)²
=4(t²-12t+36)
=4t²-48t+144
4(t-6)²
=4(t²-12t+36)
=4t²-48t+144
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