3根號(hào)8+2根號(hào)18-根號(hào)50
=3×2√2+2×3√2-5√2
=6√2+6√2-5√2
=7√2;
根號(hào)8+根號(hào)12+根號(hào)2-根號(hào)3
=2√2+2√3+√2-√3
=3√2+√3;
6根號(hào)1/3-根號(hào)12+根號(hào)3
=6×√3/3-2√3+√3;
=√3;
2根號(hào)20+2/5根號(hào)125+10根號(hào)0.05-6根號(hào)50
=2×2√5+2/5×5√5+10×√5/10-6×5√2
=4√5+2√5+√5-30√2
=7√5-30√2;
5/3（根號(hào)24-根號(hào)0.5）-8/5（根號(hào)1/8-根號(hào)6）
=5/3×(2√6-√2/2)-8/5×(√2/4-√6)
=10√6/3-5√2/6-2√2/5+8√6/5;
=50√6/15+24√6/15-25√2/30-12√2/30
=74√6/15-37√2/30;
手機(jī)提問(wèn)的朋友在客戶端右上角評(píng)價(jià)點(diǎn)【滿意】即可.