9(x+y)²-(x-y)²
来源:学生作业帮助网 编辑:作业帮 时间:2024/04/29 12:13:13
9(x+y)²-(x-y)²
9(x+y)²-(x-y)²
9(x+y)²-(x-y)²
9(x+y)²-(x-y)²
=[3(x+y)+(x-y)][3(x+y)-(x-y)]
=(4x+2y)(2x+4y)
=4(2x+y)(x+2y)
原式=[3(x+y)+(x-y)][3(x+y)-(x-y)]
=(4x+2y)(2x+4y)
=4(2x+y)(x+2y)
收录互联网各类作业题目,免费共享学生作业习题
大学作业网手机作业共收录了 千万级 学生作业题目
来源:学生作业帮助网 编辑:作业帮 时间:2024/04/29 12:13:13
9(x+y)²-(x-y)²
9(x+y)²-(x-y)²
9(x+y)²-(x-y)²
9(x+y)²-(x-y)²
=[3(x+y)+(x-y)][3(x+y)-(x-y)]
=(4x+2y)(2x+4y)
=4(2x+y)(x+2y)
原式=[3(x+y)+(x-y)][3(x+y)-(x-y)]
=(4x+2y)(2x+4y)
=4(2x+y)(x+2y)