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解题的切入点是解题的方向,也是解题的钥匙.分式求值有哪些切入点呢?下面结合例题归纳求分式的值的六个常见切入点,供同学们借鉴.切入点一:运算符号对于两个分母互为相反数的分式相加
The entry point to solve the problem is the direction of problem solving, but also the key to solving the problem.Functional evaluation of what entry point? The following combination of examples to summarize the value of the six common entry point, for students to learn. A: The sign of the operation is the fractional addition of two opposite denominators for each denominator