4(x+y)²-(x-y)² 分解因式
来源:学生作业帮助网 编辑:作业帮 时间:2024/09/01 15:05:15
4(x+y)²-(x-y)² 分解因式
4(x+y)²-(x-y)² 分解因式
4(x+y)²-(x-y)² 分解因式
4(x+y)²-(x-y)²
=[2(x+y)+(x-y)][2(x+y)-(x-y)]
=(2x+2y+x-y)(2x+2y-x+y)
=(3x+y)(x+3y)
4(x+y)²-(x-y)²
=[2(x+y)-(x-y)][2(x+y)+(x-y)]
=(2x+2y-x+y)(2x+2y+x-y)
=(x+3y)(3x+y)
不懂可追问
满意请采纳
谢谢