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(3x-1)(2x+3)-(x-2)(6x-5),其中x=-8分之3,先化简,在求值
人气:392 ℃ 时间:2020-03-27 09:21:36
解答
(3x-1)(2x+3)-(x-2)(6x-5)
=6x^2+7x-3-6x^2+17x-10
=24x-13
=-9-13
=-22
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