论文部分内容阅读
因式分解是中学代数中的一种重要的恒等变形,它是分式通分、约分、解方程及三角函数式的变形等的基础。而恒等变形又是因式分解的前提,据此,本文试图以例谈谈因式分解中常见的几种变形技巧。一、指数变换若一个多项式的各项中含有相同的字母,但其相同字母的指数不同,则可以指数最低的为标准,将各项中含相同字母的因式分别变换为含有指数最低的因式的积式,然后提取指数最低的公因式即可进行分解。例1 分解因式:
Factorization is an important isomorphism in algebra in middle school. It is the basis for splitting, partitioning, solving equations, and transforming trigonometric functions. The constant deformation is the precondition of factorization. According to this, this article attempts to talk about the common deformation techniques in factorization. First, exponential transformation If a polynomial contains the same letter in each item, but its index of the same letter is different, the index with the lowest index can be used as the criterion, and the factors with the same letter in each item can be transformed into the one with the lowest index. The product of the formula, then extract the common factor with the lowest index can be decomposed. Example 1 factorization factor: