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Solve it please it's very urgent don't spam |
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Answer» [X - 1/x]^2 = x^2 + 1/x^2 - 2.x.1/xx^2 + 1/x^2 = [x-1/x]^2 + 2.x.1/xx^2 + 1/x^2 = 81+2x^2 + 1/x^2 = 83 |
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