(2-x)(x-3)(x平方-5x-14)大于等于100(初一的题目)
人气:208 ℃ 时间:2020-04-13 05:43:24
解答
(2-x)(x-3)(x^2-5x-14)≥ 100-(x-2)(x-3)(x^2-5x-14)≥ 100(x-2)(x-3)(x^2-5x-14)≤ -100(x^2-5x+6)(x^2-5x-14)≤ -100(x^2-5x)^2 - 8(x^2-5x) -84 ≤ -100(x^2-5x)^2 - 8(x^2-5x) +16 ≤ 0{(x^2-...
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