先化简,再求值:12x-(2x-23y2)+(-32x+13y2),其中x=-1 发布时间:2017-05-21 15:23 │ 来源:www.tikuol.com 题型:解答题 问题: 先化简,再求值:12x-(2x-23y2)+(-32x+13y2),其中x=-14,y=-12.
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