因式分解(a²+2a)²-2(a²+2a)-3
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因式分解(a²+2a)²-2(a²+2a)-3
因式分解(a²+2a)²-2(a²+2a)-3
因式分解(a²+2a)²-2(a²+2a)-3
因式分解(a²+2a)²-2(a²+2a)-3
=(a²+2a-3)(a²+2a+1)
=(a+3)(a-1)(a+1)²
答:
(a²+2a)²-2(a²+2a)-3
=(a²+2a-3)(a²+2a+1)
=(a+3)(a-1)(a+1)²