\( 1.1 .3 \quad x^{2}-x+6<2(x+2) \) If \( f(x)=\frac{\sqrt{x+2}}{3-3 x^{2}} \), for which values of \( x \) is \( 1.2 .2 \quad f(x) \) non real. \( 1.2 .3 \quad f(x) \) undefined \( 1.2 .4 \quad f(x)>0 \) Simplify:

14. \( (2 a-7 b)(2 a+7 b)_{\mathrm{Ypx}} \)

3 Постройте график функцин \( y=-3 x+3 \). Найдите с помощью графика а) значение функции при \( x=1,5 \) б) при каком значении \( x \), значение функции равно \( 4,5 ? \) В) Приналлежит ли графику функци точка \( \mathrm{A}(2 ;-9) ? \)

Rationalize the denominator of \( \frac{7}{2 + \sqrt{3}} \).

If the two middle terms in the expansion of \( (a x+b)^{2 n+1} \) are equal, then find \( x \) \( a=2 b \)

\( \left(I^{\text {st }}\right. \) Session 2022) If the ratio between the fourth term from the beginning to the fourth term from the end in the expansion of \( \left(\frac{a}{x}+\frac{x}{a}\right)^{2 n} \) equals \( a^{4}: x^{4} \) , then \( n=\cdots \cdots \) \( \begin{array}{llll}\text { (a) } 2 & \text { (b) } 4 & \left.\text { (where } x \in \mathbb{R}^{*}, a \in \mathbb{R}^{*}\right)\end{array} \)