zyc2810-2023英语周报答案,我们目前整理分享关于zyc2810-2023英语周报答案及其参考答案,2如需答案 请关注微信公众号：趣找答案/直接访问www.qzda.com(趣找答案)
13.参考答案60说明分析2x--的展开式的通项公式为7=C·(-1)·2·x2,令6-=0,得r=4,可得常数项为C·2=60故答案为60
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