4. Бүтэн квадрат ялгах замаар уржигдэхуун болгон задал. \( \begin{array}{lll}\text { а) } x^{2}+8 x-33 & \text { д) } x^{2}+12 x-45 & \text { ж) } x^{2}+x-30 \\ \text { б) } x^{2}+12 x-64 & \text { е) } x^{2}+14 x+24 & \text { к) } x^{2}-7 x+12 \\ \text { в) } x^{2}-8 x-20 & \text { ё) } x^{2}-11 x+30 & \\ \text { г) } x^{2}-4 x-45 & \text { з) } x^{2}-11 x-60\end{array} \)

\( 8 x y \) is a monomial expression. Is the statement true or fause?

What should be, subtracted from \( 8 x-3 y+4 \) to get \( 3 x-2 y+4 \).

Evaluating functions: Linear and quadratic or cubic The functions \( f \) and \( g \) are defined as follows. \( f(x)=3 x^{3}+5 \quad g(x)=-5 x+4 \) Find \( f(-2) \) and \( g(7) \). \[ f(-2)=\square \] \( g(7)=\square \)

The cost price of a pen is Rs \( (3 x+5) \) and is selling price is \( \operatorname{Rs}(4 x+3) \) Write the formulato find protit.

O Functions and Lines Evaluating functions: Linear and quadratic or cubic The functions \( f \) and \( g \) are defined as follows. \[ f(x)=-2 x^{2}-3 \quad g(x)=3 x-1 \] Find \( f(5) \) and \( g(-2) \). Simplify your answers as much as possible. \[ f(5)=\square \] \( g(-2)=\square \)