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因式分解是初中代数的重要恒等变形，其变形的技巧性强，且应用广泛．因此，因式分解的应用成为数学竞赛的热点之一．为此本文举例说明因式分解在竞赛中常见的几种应用，供同学们参考．一、用于计算例１１．２３４５２＋０．７６５５２＋２．４６９×０．７６５５＝（）．（１
Factorization is an important isomorphic deformation of junior high school algebra. Its deformation technique is strong and widely used. Therefore, the application of factorization has become one of the hot spots in the math competition. For this reason, this article illustrates several common applications of factorization in competitions for students’ reference. First, for calculation example 11.23452+0.76552+2.469×0.7655=(). (1