x + 1/x = b . calcule x ^ 2 + 1/(x ^ 2)
O a x ^ 2 + 1/(x ^ 2) = b ^ 2 - 2
x ^ 2 + 1/x = b - 2
ос x ^ 2 - 1/(x ^ 2) = b ^ 2 + 2
Od. x ^ 2 + 2/(x ^ 2) = b ^ 2 - 1
x ^ 2 + 1/(x ^ 2) = b ^ 2 - 1
O a x ^ 2 + 1/(x ^ 2) = b ^ 2 - 2
x ^ 2 + 1/x = b - 2
ос x ^ 2 - 1/(x ^ 2) = b ^ 2 + 2
Od. x ^ 2 + 2/(x ^ 2) = b ^ 2 - 1
x ^ 2 + 1/(x ^ 2) = b ^ 2 - 1
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