1.(根号12-2倍根号1/2)-(根号18-3倍根号1/3)

问题描述:

1.(根号12-2倍根号1/2)-(根号18-3倍根号1/3)
2.根号0.8+根号0.5*2-根号2/9
根号0.8+根号0.5 乘 2-根号2/9

1,
=(根号12-根号2)-(根号18-根号3)
=(2 倍根号3-根号2)-(3倍根号2-根号3)
=2 倍根号3+ 根号3-(根号2+3倍根号2)
=3倍根号3-4倍根号2
2,
=2倍根号1/5+根号2-1/3倍根号2
==2倍根号1/5+2/3倍根号2