{(x-y)²+(x+y)(x-y)}÷2x
来源:学生作业帮助网 编辑:作业帮 时间:2024/07/31 01:58:13
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{(x-y)²+(x+y)(x-y)}÷2x
{(x-y)²+(x+y)(x-y)}÷2x
{(x-y)²+(x+y)(x-y)}÷2x
{(x-y)²+(x+y)(x-y)}÷2x
=(x-y)(x-y+x+y)÷2x
=(x-y)(2x)÷2x
=x-y
原式=(x^2+y^2-2xy+x^2-y^2)/2x
=[2x(x-y)]/2x
=x-y