解分式方程、无理方程和有些特殊的高次方程时常常需要将方程通过因式分解化为低次方程求解.而因式分解是中学的一个难点,许多同学会出现各种错误.因此,赋值法对同学们因式分解有一定的帮助.一、赋值法用于因式分解同学们自小学就对0~9这10个数字熟悉并掌握.因此利用赋值法进行因式分解,对 It is often necessary to solve equations by factorization into low-order equations for solution equations, unreasonable equations and some special higher-order equations, and factorization is a difficult point in middle schools and many students will encounter various mistakes. Therefore, Assignment method for students due to factoring a certain help.First, the assignment method for factoring students from primary school on the 0 to 9 of these 10 numbers are familiar with.Therefore, the use of assignment method of factorization, the