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因式分解是整式的一种重要的变形,在解题中有着广泛的应用.借助因式分解可解决求值、说理等多方面的问题,下面举例说明.一、用于求值例1已知m+n=3,mn=32,求m3n-2m2n2+mn3的值.
Factorization is an important variant of the whole formula. It has a wide range of applications in problem solving. It can solve many problems such as evaluation and reasoning through factorization. The following examples are used to illustrate. Know m+n=3, mn=32, find the value of m3n-2m2n2+mn3.