(x²+2xy+y²)(x²-xy+y²)²如何解?详细步骤和说一下运用了什么方法
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(x²+2xy+y²)(x²-xy+y²)²如何解?详细步骤和说一下运用了什么方法
(x²+2xy+y²)(x²-xy+y²)²如何解?详细步骤和说一下运用了什么方法
(x²+2xy+y²)(x²-xy+y²)²如何解?详细步骤和说一下运用了什么方法
=(x+y)²(x²-xy+y²)²
=[(x+y)(x²-xy+y²)]²
=(x³+y³)³
=x^6+2x³y³+y^6