[(x-y)²+(x-y)(x+y)]÷2x初二数学计算.

来源：学生作业学帮网编辑：学帮网时间：2024/05/23 01:37:04

[(x-y)²+(x-y)(x+y)]÷2x
=(x-y)(x-y+x+y)÷2x
=(x-y)*2x÷2x
=x-y

[(x-y)²+(x-y)(x+y)]÷2x
=(x^2-2xy+y^2+x^2-y^2)/2x
=[2x(x-y)]/2x
=x-y