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“整式的加减”涉及许多概念,下面我们探究如何准确理解和应用这些概念解相关的竞赛试题.一、知识储备1.理解概念.(1)三式.①单项式:数和字母的积所形成的式子叫作单顶式(单独的一个数或一个字母也是单项式).②多项式:几个单项式的和叫作多项式.③整式:单项式与多项式统称整式.(2)四数.①单项式的次数:单项式中所有字母的指数的和叫作这个单项式的次数.
“Integer addition and subtraction ” involves many concepts, the following we explore how to accurately understand and apply these concepts related to the game questions .A, knowledge of the concept of 1. understanding of the concept. (1) three type. ① monomials: numbers and letters Product formed by the product is called a single top type (a single number or a letter is also a monomial.) Polynomial: a few monomials and is called a polynomial.③ whole: monomial and polynomial collectively called the whole. (2) four. ① The number of monomials: The sum of the exponents of all letters in a monomial is called the number of times this monomial.