化简(x^2-2x-3)/(x^2+2x+1)÷(x^2-9)/(x^2+x)在线等```速度```不过过程要具体

来源:学生作业帮助网 编辑:六六作业网 时间:2024/12/24 11:49:33
化简(x^2-2x-3)/(x^2+2x+1)÷(x^2-9)/(x^2+x)在线等```速度```不过过程要具体化简(x^2-2x-3)/(x^2+2x+1)÷(x^2-9)/(x^2+x)在线等`

化简(x^2-2x-3)/(x^2+2x+1)÷(x^2-9)/(x^2+x)在线等```速度```不过过程要具体
化简(x^2-2x-3)/(x^2+2x+1)÷(x^2-9)/(x^2+x)
在线等```速度```不过过程要具体

化简(x^2-2x-3)/(x^2+2x+1)÷(x^2-9)/(x^2+x)在线等```速度```不过过程要具体
化简(x^2-2x-3)/(x^2+2x+1)÷(x^2-9)/(x^2+x)
=(x-3)(x+1)/(x+1)^2÷(x+3)(x-3)/x(x+1)
=(x-3)/(x+1)*x(x+1)/(x+3)(x-3)
=x/(x+3)

(x-3)(x+1)^2
_____________
x