作业帮约分x^2-(y-z）^2/(x+y)^2-z^2 约分x^2-(y-z）^2/(x+y)^2-z^2
来源：学生作业帮助网 编辑：作业帮 时间：2024/05/10 03:03:04
约分x^2-(y-z）^2/(x+y)^2-z^2 约分x^2-(y-z）^2/(x+y)^2-z^2
约分x^2-(y-z）^2/(x+y)^2-z^2
约分x^2-(y-z）^2/(x+y)^2-z^2
约分x^2-(y-z）^2/(x+y)^2-z^2 约分x^2-(y-z）^2/(x+y)^2-z^2
x^2-(y-z）^2/(x+y)^2-z^2
=(x+y-z)(x-y+z)/(x+y+z)(x+y-z)
=(x-y+z)/(x+y+z)