学帮网1 (1/3a+b)(1/3a+b) 2 (2x-y)-2(x+2y) 3 (x-y+3)(x-y-3) 4 (-x+y)^21 (1/3a+b)(1/3a+b) 2 (2x-y)-2(x+2y) 3 (x-y+3)(x-y-3) 4 (-x+y)^2
来源：学生作业学帮网 编辑：学帮网 时间：2024/07/08 02:44:26
1 (1/3a+b)(1/3a+b) 2 (2x-y)-2(x+2y) 3 (x-y+3)(x-y-3) 4 (-x+y)^2
1 (1/3a+b)(1/3a+b) 2 (2x-y)-2(x+2y) 3 (x-y+3)(x-y-3) 4 (-x+y)^2
什么意思?