二次根式计算:(要详细的过程)
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(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)
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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3
②(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2
③3根号63-(根号16/5+根号36/7+1/5根号405)
=9根号7-(4/5根号5+6/7根号7+9/5根号5)
=57/7根号7-13/5根号5
=(9根号2+10根号3)-(9根号2+7根号3)
=3根号3
②(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2
③3根号63-(根号16/5+根号36/7+1/5根号405)
=9根号7-(4/5根号5+6/7根号7+9/5根号5)
=57/7根号7-13/5根号5
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