Đáp án:
Giải thích các bước giải:
Vì \(768 = 256 + 512 = {2^8} + {2^9}\) nên (x;y) = (8;9) hoặc (9;8).
ta có :
`768=256+512=28+29` nên `(x;y`) `=` `(8;9)` hoặc `(9;8)`.
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