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2015-02-05 · 知道合伙人教育行家
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解:(Z²-x²-y²)²-4x²y²
=(Z²-x²-y²+2xy)(Z²-x²-y²-2xy)
=【Z²-(x²+y²-2xy)】【Z²-(x²+y²+2xy)】
=【Z²-(x-y)²】【Z²-(x+y)²】
=【Z²+(x-y)】【Z²-(x-y)】【Z²+(x+y)】【Z²-(x+y)】
=(Z²+x-y)(Z²-x+y)(Z²+x+y)(Z²-x-y)
=(Z²-x²-y²+2xy)(Z²-x²-y²-2xy)
=【Z²-(x²+y²-2xy)】【Z²-(x²+y²+2xy)】
=【Z²-(x-y)²】【Z²-(x+y)²】
=【Z²+(x-y)】【Z²-(x-y)】【Z²+(x+y)】【Z²-(x+y)】
=(Z²+x-y)(Z²-x+y)(Z²+x+y)(Z²-x-y)
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