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学习分式这一章要理解什么样的代数式是分式,会判断字母取什么值时分式有意义或没有意义.理解分式的基本性质,会利用在分式的分子、分母上同时乘以或除以一个不为0的式子化简分式.理解同底数幂的乘、除法的意义,理解并掌握相关的法则.掌握分式的加、减、乘、除运算.会利用把分式方程化为整式方程的思路解分式方程,并能应用分式方程解决一些实际问题,解分式方程时会检验解的合理性.理解零指数、负整数指数的意义,并能用科学记数
Learning the fraction This chapter to understand what kind of algebra is a fraction, will determine what value to take the value of the time-point meaningless or meaningless understanding of the basic nature of fractional, will be used in fractional numerator, denominator multiplied by the same time Or divided by a non-zero formula reduction factor. Understand the same base power multiplication, division of meaning, understand and grasp the relevant rules. Grasp the addition, subtraction, multiplication and division operations will use the points Equation equation into the equation of the equation solution equation, and can be applied to solve some of the practical problems of fractional equation will solve the equation solution to test the rationale for understanding the meaning of zero index, negative integer index, and can use science Calculate