If $x$ is a positive real number such that $x + \frac{1}{x} = 3$, what is the value of $x^4 + \frac{1}{x^4}$?

[GMAT Focus] Algebra Trap Dissection | AceThePrep

GMAT FocusQuantitative ReasoningAlgebra

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If is a positive real number such that , what is the value of ?

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