根号48=根号16*3-根号3=4*根号3-根号4=3*根号3
根号48=4根号3所以:根号48-根号3 =4根号3-根号3 =3根号3
48=2*2*2*2*3根号48-根号3=4根号3-根号3=3根号3
根号48=根号16×3=4倍根号3
根号48-根号3 =√3(√16-1)=√3(4-1)=3√3