论文部分内容阅读
去括号法则是中学数学代数部分的一个基础知识点,是化简代数式、分解因式、配方法等知识点当中的重要环节。在教授这一节时,很多老师总有困惑,用乘法分配律很奏效,为何偏偏弄出一个难记忆、操作不简便的“去括号法则”呢?乘法分配律便于去括号中符号变化的记忆,但是,它的括号又是如何去掉的呢?有什么理由可以去掉呢?因而,还得回到去括号法则中来。括号在数学中是一种常用的符号,在数学变形中起着整体变
Going to parentheses is a basic knowledge of mathematical algebra in high school, simplifying algebra, factoring, formulating and other knowledge points. In teaching this section, many teachers are always confused, with the law of distribution of multiplication is effective, why happens to come up with a difficult to remember, the operation is not easy "multiplication division law is easy to bracketed symbol changes However, its parentheses and how to get rid of it? What reason can be removed? Therefore, have to go back to the law of braches. Brackets are a common symbol in math and play an integral part in mathematical transformations