\( \left. \begin{array} { l } { x ^ { 2 } - x - 6 } \\ { x ^ { 2 } - x - 72 } \\ { x ^ { 2 } + 5 x - 6 } \\ { x ^ { 2 } - 4 x - 45 } \\ { x ^ { 2 } + 3 x - 18 } \end{array} \right. \)

883. Прсобразуйте в многочлен: \( \begin{array}{lll}\text { a) }\left(4 m^{2}+5 n\right)^{2} ; & \text { в) }\left(2 x^{2}+5 y^{2}\right)^{2} ; & \text { д) }\left(\frac{1}{4} x^{2}-4 y^{3}\right)^{2} \\ \text { б) }\left(3 c-2 p^{3}\right)^{2} ; & \text { г) }\left(7 y^{3}-3 p^{2}\right)^{2} ; & \text { е) }\left(\frac{2}{5} a^{4}+\frac{1}{2} a^{3}\right)^{2}\end{array} \)

Factorize the expression \( x^{2}-1 \)

2. The sum of three consertitive whele numbers is 8 . I Ind the numbers.

If \( \left(\frac{3}{4}\right)^{x}\left(\frac{2}{3}\right)^{y}=\frac{32}{27} \), find the values of \( x \) agy respectuely

164. DNK da vodorod bog'lari fosfoefir bog'laridan 172 ta ko'p. Vodorod boglari S nukloidlaridan 4,53 marta ko'p. DNK dagi nukloidlarini sonini toping. \( \begin{array}{llll}\text { A) } 180 & \text { B) } 110 & \text { C) } 150 & \text { D) } 170\end{array} \)