if x + 1/x = 2, then x² + 1/x² is equal to
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Step-by-step explanation:
x² + 1 =2x
x² - 2x +1 =0
x(x-1) -1 (x-1) =0
(x-1) (x-1) =0
x-1 =0
x=1
is allso
x² + 1/x² = 2
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