问题描述：
急啊、、、下列算式中,能连续两次使用平方差公式计算的是,要过程
A.(x+y)(x²+y²)(x-y) B.(x+1)(x²-1)(x+1) C.(x+y)(x²-y²)(x-y) D.(x-y)(x²+y²)(x-y)
A.(x+y)(x²+y²)(x-y) B.(x+1)(x²-1)(x+1) C.(x+y)(x²-y²)(x-y) D.(x-y)(x²+y²)(x-y)
问题解答：
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