为什么要学习因式分解,怎样才能学好因式分解,让我们与已学过的分解质因数进行类比,从而加深对概念的认识与理解. 一、“类:比”学概念 1.“通分”与“约分”就要用到“分解”. 分数运算中,在通分或约分时,要找几个整数的最小公倍数或最大公约数就要先分解质因数.同样,在分式运算中,要通分 Why do we need to study factorization? How can we learn the factorization so that we can analogize the factor we have learned so as to deepen the understanding and understanding of the concept. First, the concept of “class: ratio” 1. “And” about “centrative” it is necessary to use “decomposition”. In the fractional operation, in order to divide or approximate the time, to find the least common multiple or the greatest common divisor of several integers must first decompose the prime factor. Similarly, in the fraction In operation, we must pass points