二次根式计算:
问题描述:
二次根式计算:
①(3/2根号72+2根号75)-(根号162+根号147) ②(16根号3/2-5根号1/2)+(1/4根号8-3根号2/3)③3根号63-(根号16/5+根号36/7+1/5根号405)
答
①(3/2根号72+2根号75)-(根号162+根号147)=(9根号2+10根号3)-(9根号2+7根号3)=3根号3②(16根号3/2-5根号1/2)+(1/4根号8-3根号2/3)=(8根号6-5/2根号2)+(1/2根号2-根号6)=7根号6-2根号2③3根号63-(根...