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一、要注意运用转化方法解题“分式”这一章中多处运用了转化方法,如：分式除法运算的基本思想方法是将除法转化为乘法；分式加减运算的基本思想方法是将异分母的分式加减转化为同分母的分式加减；解分式方程的基本思想方法是把分式方程转化为整式方程．例1 苦关于x的方程ax+1/x-1-1=O有增根,求α的值．解：去分母并整理,得(a-1)x+2=O．∵原方程有增根, ∴ x-1=O,即x=1．∴ (a-1)×1+2=O,解得a=-1．点评：本题是近几年中考试题中常见的一种题型．解分式方程,需要用最简公分
First, we must pay attention to the use of transformation methods to solve problems “fractional” This chapter uses transformation methods in many places, such as: the basic idea of fractional division operations is to divide the division into multiplication; fractional addition and subtraction operations basic ideas and methods It is the addition and subtraction of the fractions of the denominator and the denominator. The basic idea of the fractional equation is to convert the fractional equation to the integral equation. Example 1 bitter about the x equation ax+1/x-1-1=O with rooting, find the value of α. Solution: To denominator and sort out, get (a-1)x+2=O. The Sasahara equation has a root increase, ∴ x-1=O, that is, x=1. ∴ (a-1)×1+2=O, the solution is a=-1. Comments: This question is a common type of questions in the examination questions in recent years. Solve fractional equations, need to use the most simple centimeters