[tex]x^{2} \sqrt{x} \sqrt{x} \sqrt[n]{x} \sqrt[n]{x} \sqrt[n]{x} \frac{x}{y} \frac{x}{y} x_{123} x_{123} \beta \alpha \pi \left[\begin{array}{ccc}1&2&3\\4&5&6\\7&8&9\end{array}\right] \lim_{n \to \infty} a_n \neq \int\limits^a_b {x} \, dx \geq \left \{ {{y=2} \atop {x=2}} \right. \leq \leq \leq \leq \leq \leq la 2 va rog am nevoie urgent\\[/tex]