4a[x-y]的平方-2b【Y--X】的平方+[y-X]求过程

来源：学生作业学帮网编辑：学帮网时间：2024/05/05 14:40:30

4a(x-y)的平方-2b(y-x)的平方+(y-x)
=4a(x-y)的平方-2b(x-y)的平方-(x-y)
=(x-y)[4a(x-y)-2b(x-y)-1]
=(x-y)(4ax-4ay-2bx+2by-1)

=4a(x-y)²-2b(x-y)²-(x-y)
=(x-y)(4ax-4ay-2bx+2by-1)