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二次多项式因式分解在初中教学中占有重要的地位,同时也为解方程打下了基础.在人教版的教材多项式运算部分,给出了提公因式法、平方差公式法、完全平方公式法和十字相乘法等方法,而在笔者从事的A-Level课程(英国的普通中等教育证书考试高级水平课程)数学C1(相当于中国九年级)教学中,除了提公因式法、平方差公式法之外,提供了另外的一种因式分解方法,在这里展现出来,供读者参考、对比.
The quadratic polynomial factorization occupies an important position in junior high school teaching and also lays the foundation for solving the equation.According to the teaching material polynomial operation part of the PEP, this paper gives the common factor method, the square difference formula method, the complete square Formula method and cross multiplication method, etc., and in the author’s A-Level Curriculum (British General Certificate of Secondary Education Examination Advanced Level Courses Mathematics C1 (equivalent to China’s ninth grade) teaching, in addition to the public factor method, In addition to the square error method, an additional factorization method is presented here for readers’ reference and comparison.