((x+2y)(x-2y)+4(x-y)的2次)/6x

来源:学生作业帮助网 编辑:作业帮 时间:2024/10/05 16:57:08
((x+2y)(x-2y)+4(x-y)的2次)/6x
x){**55*t |>ٚtU$RΆ!)֨3530-**X" S&o_\gr\

((x+2y)(x-2y)+4(x-y)的2次)/6x
((x+2y)(x-2y)+4(x-y)的2次)/6x

((x+2y)(x-2y)+4(x-y)的2次)/6x
((x+2y)(x-2y)+4(x-y)^2)/6x
=[(x^2-4y^2)+(4x^2-8xy+4y^2)]/6x
=(5x^2-8xy)/6x
=(5x-8y)/6