a²-2a-b²+1因式分解

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a²-2a-b²+1因式分解a²-2a-b²+1因式分解a²-2a-b²+1因式分解解a²-2a-b²+1=(a

a²-2a-b²+1因式分解
a²-2a-b²+1因式分解

a²-2a-b²+1因式分解

a²-2a-b²+1
=(a²-2a+1)-b²
=(a-1)²-b²
=(a-1-b)(a-1+b)