if x²+1/x²=27find the value of x-1/x
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Step-by-step explanation:
Given :-
x²+1/x² = 27
then
(x-1/x)² = (x² + 1/x²) - 2(x × 1/x)
= 27 - 2
= 25
x - 1/x = ✓25
x - 1/x = ± 5
Now,
x - 1/x = 5 & (-5)
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