作业帮因式分解 (x-z)²-4(y+z)²
来源：学生作业帮助网 编辑：作业帮 时间：2024/11/08 01:53:34
因式分解 (x-z)²-4(y+z)²
因式分解 (x-z)²-4(y+z)²
因式分解 (x-z)²-4(y+z)²
(x-z)²-4(y+z)²
=[(x-z)+2(y+z)][(x-z)-2(y+z)]
=(x-z+2y+2z)(x-z-2y-2z)
=(x+2y+z)(x--2y-3z)
=[(x-z)+2(y+z)][(x-z)-2(y+z)]
=(x+2y+z)(x-2y-3z)
(x-z)²-4(y+z)²
=[（X-Z)+2(y+z)][(x-Z)-2(y+Z)]
=(x-z+2y+2z)(x-z-2y-2z)
=(x+2y+z)(x-2y-3z)