计算：$\sqrt{2}$sin60°﹣4cos²30°+sin45°•tan60°．

—The noise from the next door is driving me mad.

一 So it is. We must ask our neighbour to stop it.

已知：b是最小的正整数，且a、b满足（c﹣5）²+|a+b|=0，请回答问题

根据短文内容，选择最佳答案。

Schedule a Tour

    University of South Carolina （USC) is famous for its warm southern hospitality（好客）. Schedule a visit and feel it in person. Our walking tours are led by current students, called University Ambassadors, who are looking forward to telling you what it's like to live and study in USC. Our walking tours run Monday through Friday and most are around 2 hours. The university will be closed on Tuesday, July 4, 2017 in observance of the holiday. We welcome your visit year round and will be ready for you, rain or shine. Please refer to the list below to determine which tour is best for you and remember to book at least two weeks in advance.