作业帮计算(x²-y²)(x+y)÷(x+y)²等于
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计算(x²-y²)(x+y)÷(x+y)²等于
计算(x²-y²)(x+y)÷(x+y)²等于
计算(x²-y²)(x+y)÷(x+y)²等于
解
(x²-y²)(x+y)÷(x+y)²
=(x+y)(x-y)(x+y)÷(x+y)²
=x-y
(x²-y²)(x+y)÷(x+y)²
=(x²-y²)÷(x+y)
=x-y
（x^2-y^2)(x+y)/(x+y)^2=(x+y)(x-y)(x+y)/(x+y)^2=(x-y)(x+y)^2/(x+y)^2=x-y