檢視主元法的原始碼

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中文名称；主元法

类别；分解因式方法

简例；(ab+bc+ca)(a+b+c)-abc.

特点；可以对多种因式分解
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所谓'''主元法'''分解因式就是在分解含多个字母的[[代数]]式时,选取其中一个字母为主元(未知数),将其它字母看成是常数,把代数式整理成关于主元的降幂排列(或升幂排列)的[[多项式]],再尝试用公式法、配方法、分组法等分解因式的方法进行分解。<ref>[https://wenku.so.com/d/b86c0d2da57c2cc8828f7892d963266c 主元法],360文库 , 2022年7月2日</ref>