(3倍根号下0.5减5倍根号下3分之1的差)减去(2倍根号下0.125减去根号下20)的差

问题描述:

(3倍根号下0.5减5倍根号下3分之1的差)减去(2倍根号下0.125减去根号下20)的差

[3√0.5-5√﹙1/3﹚]-﹙2√0.125-√20﹚
=3√2/2-5√3/3-√2/2+2√5
=√2-5√3/3+2√5.