因式分解 Thanks

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因式分解 Thanks
因式分解 Thanks

因式分解 Thanks
全部吗
4m³n-16mn³
=4mn(m²-n²)
=4mn(m+n)(m-n)
(a²+b²-1)²-4a²b²
=[(a²+b²-1)+2ab][(a²+b²-1)-2ab]
=[(a+b)²-1][(a-b)²-1]
=(a+b+1)(a+b-1)(a-b+1)(a-b-1)

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