所屬主題: [初中數學] – Identities and Factorization 恆等式及因式分解

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影片內容: 00:16 – why cross-method 為何需要十字相乘法 01:39 – factorization of 因式分解 05:11 – illustrative example 1 例子1 06:20 – factorization of 因式分解 11:54 – illustrative example 2 例子2 13:52 – factorization of 因式分解 所屬主題: [初中數學] – Identities and Factorization 恆等式及因式分解

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影片內容: 00:34 – review of some important identities 重溫幾個重要的恆等式 01:30 – difference of two squares 平方差 03:53 – perfect square 完全平方 08:28 – sum and difference of two cubes 立方和及立方差 所屬主題: [初中數學] – Identities and Factorization 恆等式及因式分解

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影片內容: 00:18 – what is factorization 甚麼是因式分解 01:02 – taking out common factors 抽公因式 09:05 – grouping terms 併項法 所屬主題: [初中數學] – Identities and Factorization 恆等式及因式分解

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影片內容: 00:18 – difference of two squares 平方差 02:57 – perfect square 完全平方 06:58 – sum and difference of two cubes 立方和及立方差 所屬主題: [初中數學] – Identities and Factorization 恆等式及因式分解

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影片內容: 00:05 – basic ideas 基本概念 02:56 – illustrative example 1 例子1 03:59 – illustrative example 2 例子2 04:37 – illustrative example 3 例子3 所屬主題: [初中數學] – Identities and Factorization 恆等式及因式分解

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影片內容: 02:23 – perfect numbers 完美數 所屬主題: [初中數學] – Identities and Factorization 恆等式及因式分解

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