因式分解(x+1)(x+2)(x+3)(x+4)-15

2025-06-28 10:35:39
推荐回答(1个)
回答1:

(x+1)(x+2)(x+3)(x+4)-15
=(x+1)(x+4)(x+2)(x+3)-15
=(x²+5x+4)(x²+5x+6)-15
=(x²+5x)²+10(x²+5x)+9
=(x²+5x+1)(x²+5x+9)
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