9(x+y)²-(x-y)²
来源:学生作业帮助网 编辑:作业帮 时间:2024/06/30 03:59:31
![9(x+y)²-(x-y)²](/uploads/image/z/12363457-49-7.jpg?t=9%28x%2By%29%26%23178%3B-%28x%EF%BC%8Dy%29%26%23178%3B)
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
飞天作业帮手机作业共收录了 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:2024/06/30 03:59:31
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)