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left parenthesis, start fraction, 1, divided by, square root of, 2, end square root, end fraction, plus, start fraction, 1, divided by, square root of, 3, end square root, end fraction, right parenthesis, dot, left parenthesis, start fraction, 1, divided by, square root of, 2, end square root, end fraction, minus, start fraction, 1, divided by, square root of, 3, end square root, end fraction, right parenthesis, start text, space, a, n, space, end text, left parenthesis, start fraction, 3, divided by, square root of, 5, end square root, end fraction, minus, start fraction, 2, divided by, square root of, 6, end square root, end fraction, right parenthesis
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