因式分解 (十字相乘法) | Factorization by Cross-method

影片內容:

01:39 – 因式分解 x^2 + bx + c | factorization of x^2 + bx + c
05:11 – 例子 1 | example 1
06:20 – 因式分解 ax^2 + bx + c | factorization of ax^2 + bx + c
11:54 – 例子 2 | example 2
13:52 – 因式分解 ax^2 + bxy + cy^2 | factorization of ax^2 + bxy + cy^2

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