(3又根号48加上根号12减2又根号27)除以根号3 =3又根号16加上根号4减2又根号9 =3×4+2+3 =17
(3√48+√12-2√27)÷√3 =(12√3+2√3-6√3)÷√3 =8√3÷√3 =8