Toán Lớp 9: 2 căn 1/7-3/2 căn 28+20 căn 0,63=9 b,căn 36x -72-15 căn x-2/25=4(5+căn x-2) -

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Toán Lớp 9: 2 căn 1/7-3/2 căn 28+20 căn 0,63=9 b,căn 36x -72-15 căn x-2/25=4(5+căn x-2)