Please solve q. 2 and 4
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squaring both side
(x + 1/x)² = 6²
x² + 1/x² + 2 = 36
x² + 1/x² = 34
x² + 1/x² - 2 = 34 -2
( x - 1/x)² = 32
(x-1/x)² = (4√2)²
x-1/x = 4√2
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