√12-³√-27+(-2/√5 -1)-√0.5
问题描述:
√12-³√-27+(-2/√5 -1)-√0.5
答
√12-³√-27+(-2/√5 -1)-√0.5
=√12-³√-27+(-2/√5 -1)-√1/2
=2√3+3-2√5/5 -1-√1/2
=2√3+2-2√5/5 -√2/2
=2√3-2√5/5 -√2/2+2