下列算式能连续两次用平方差公式计算的是?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)

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下列算式能连续两次用平方差公式计算的是?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)
下列算式能连续两次用平方差公式计算的是?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)

下列算式能连续两次用平方差公式计算的是?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)
嗯 ,选A

A.(x+y)(x^2+y^2)(x-y)=(x^2-y^2)(X^2+y^2)=x^4-y^4. B. (x+1)(x^2-1)(+1)=(x+1)^2(x^2-1)不行 C.D都不行.只有A了.

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