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thanhphuong97qn
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giai giup minh 2 bai
bai 1: x + \frac{x}{\sqrt[2]{x^2-1}}=2\sqrt[2]{2}
bai 2: 8x(2x^2 -1)(8x^4 -8x^2 +1) =1
bai 1: x + \frac{x}{\sqrt[2]{x^2-1}}=2\sqrt[2]{2}
bai 2: 8x(2x^2 -1)(8x^4 -8x^2 +1) =1