Toán Lớp 9: a) căn (2x-1)^2 =3
b) 5/3 căn 15x – căn 15x -2 =1/3 căn 15x
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Toán Lớp 9: a) căn (2x-1)^2 =3
b) 5/3 căn 15x – căn 15x -2 =1/3 căn 15x
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