[π-4]º×1/2-³√-27×[-√1/9]
问题描述:
[π-4]º×1/2-³√-27×[-√1/9]
答
[π-4]º×1/2-³√-27×[-√1/9]
=1*1/2-(-3)*(-1/3)
=1/2-1
=-1/2