作业帮化简 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：2024/05/07 22:21:16
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)