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数学
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X方=2X方-4,X等于多少?
人气:249 ℃ 时间:2020-04-03 04:18:39
解答
移向可得X方=4 开方有两种情况,x可以为正负数,±根号4=±2.实在不行你可以用计算计算哦.
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