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Lesson 3 - 4
3. Equation of straight line 直線方程
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Finding the equation of straight line 求直線方程
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Equation of special straight line 特殊的直線
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Intersection of two straight lines 兩直線的交點
4. Factorization 因式分解
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取出最大公因數
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By Grouping terms併項法
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By using identities利用恆等式
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Factorization by cross-method交叉方法
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Factorization of Quadratic Polynomial in 2 Variables
含有兩個二次變量的因式分解
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