化简 x²-1分之x+3÷﹣x²+2x-1分之(x+3)(x-1)
来源:学生作业帮助网 编辑:作业帮 时间:2024/06/28 17:45:48
![化简 x²-1分之x+3÷﹣x²+2x-1分之(x+3)(x-1)](/uploads/image/z/440236-28-6.jpg?t=%E5%8C%96%E7%AE%80+x%26%23178%3B-1%E5%88%86%E4%B9%8Bx%2B3%C3%B7%EF%B9%A3x%26%23178%3B%2B2x-1%E5%88%86%E4%B9%8B%28x%2B3%29%28x-1%29)
化简 x²-1分之x+3÷﹣x²+2x-1分之(x+3)(x-1)
化简 x²-1分之x+3÷﹣x²+2x-1分之(x+3)(x-1)
化简 x²-1分之x+3÷﹣x²+2x-1分之(x+3)(x-1)
(x+3)/( x²-1)÷[(x+3)(x-1)/(﹣x²+2x-1)]
=(x+3)/( x²-1)÷[-(x+3)(x-1)/(x²-2x+1)]
=(x+3)/( x²-1)÷[-(x+3)(x-1)/(x-1)²]
=(x+3)/( x²-1)÷[-(x+3)/(x-1)]
=-(x+3)/( x²-1)*(x-1)/(x+3)
=-(x+3)/[( x-1)(x+1)]*(x-1)/(x+3)
=-1/(x+1)
=(x+3)/(x+1)(x-1)×[-(x-1)²]/(x+3)(x-1)
=-1/(x+1)