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| 2017/06/24 20:43:06瀏覽45｜回應0｜推薦0 | |
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此文章來自奇摩知識+如有不便請留言告知 中二算術 Math發問: Factorize (x-1)(x-2)(x-3)(x-4)-48 更新: 謝謝"雨後陽光"解答及十多位"知識友們"贊助,Thanks! 最佳解答: (x - 1) (x - 2) (x - 3) (x - 4) - 48 = (x - 1) (x - 4) (x - 2) (x - 3) - 48 = (x2 - 5x + 4) (x2 - 5x + 6) - 48 = (x2 - 5x + 5 - 1) (x2 - 5x + 5 + 1) - 48 = (x2 - 5x + 5)2 - 12 - 48 = (x2 - 5x + 5)2 - 49 = (x2 - 5x + 5 - 7) (x2 - 5x + 5 + 7) = (x2 - 5x - 2) (x2 - 5x + 12) 其他解答: |
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