因式分解(a²-a)²-14(a²-a)+14
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因式分解(a²-a)²-14(a²-a)+14
因式分解(a²-a)²-14(a²-a)+14
因式分解(a²-a)²-14(a²-a)+14
(a²-a)²-14(a²-a)+14
=(a²-a)²-14(a²-a)+7²-7²+14
=(a²-a-7)²-49+14
=(a²-a-7)²-35
=(a²-a-7+√35)(a²-a-7-√35)