((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:2024/11/23 22:02:08
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