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数学
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64(x-3)²-9=0,求x的值.急、谢谢大家.
人气:197 ℃ 时间:2020-03-28 04:08:23
解答
64(x-3)²-9=0
64(x-3)²=9
(x-3)²=9/64
x-3=3/8或x-3=-3/8
x=27/8或x=-21/8
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