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2 la puterea x-2 < 4 la puterea 2x

Răspuns :

[tex] \sqrt{x} \sqrt[n]{x} x^{123} x^{123} \leq [/tex]
[tex]2^{x-2}\ \textless \ 4^{2x}\\ 2^x:2^2\ \textless \ (2^2)^{2x}\\ 2^x:2^2\ \textless \ 2^{4x}\\ 2^x\ \textless \ 2^{4x+2}\\ x\ \textless \ 4x+2\\ 2\ \textless \ 3x\\ x\ \textgreater \ \frac{2}{3}[/tex]