化简分式【(x/x-1)-(x/x²-1)】÷(x²-x/x²-2x+1),并从-1≤x≤3中选一个你认为适合的整数x代入求值
来源:学生作业帮助网 编辑:作业帮 时间:2024/06/30 20:46:01
![化简分式【(x/x-1)-(x/x²-1)】÷(x²-x/x²-2x+1),并从-1≤x≤3中选一个你认为适合的整数x代入求值](/uploads/image/z/596372-68-2.jpg?t=%E5%8C%96%E7%AE%80%E5%88%86%E5%BC%8F%E3%80%90%EF%BC%88x%2Fx-1%EF%BC%89-%EF%BC%88x%2Fx%26%23178%3B-1%EF%BC%89%E3%80%91%C3%B7%EF%BC%88x%26%23178%3B-x%2Fx%26%23178%3B-2x%2B1%EF%BC%89%2C%E5%B9%B6%E4%BB%8E-1%E2%89%A4x%E2%89%A43%E4%B8%AD%E9%80%89%E4%B8%80%E4%B8%AA%E4%BD%A0%E8%AE%A4%E4%B8%BA%E9%80%82%E5%90%88%E7%9A%84%E6%95%B4%E6%95%B0x%E4%BB%A3%E5%85%A5%E6%B1%82%E5%80%BC)
化简分式【(x/x-1)-(x/x²-1)】÷(x²-x/x²-2x+1),并从-1≤x≤3中选一个你认为适合的整数x代入求值
化简分式【(x/x-1)-(x/x²-1)】÷(x²-x/x²-2x+1),并从-1≤x≤3中选一个你认为适合的整数x代入求值
化简分式【(x/x-1)-(x/x²-1)】÷(x²-x/x²-2x+1),并从-1≤x≤3中选一个你认为适合的整数x代入求值
原式=[x^2+x-x/x^2-1]*(x-1)^2/x(x-1)
=x^2/x^2-1*(x-1)/x
=x/(x+1)
令x=1 则得到1/2
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