Identify whether   $4xy,\frac{xy}{2}$  is like terms or unlike terms

(a)  

The diagram shows a rectangular park. The shaded square is planted with flowers. The rest of the area is covered with bricks. Write an expression for the area covered with bricks.

(a)  

Simplify  $\frac{2}{3}fg-\left(9mn-\frac{1}{2}fg\right)+\left(3mn-\frac{1}{6}fg\right)$  

(a)  

 $\left(3x^2+7y-1\right)-\left(x^2+2y-5\right)+\left(6x^2-y\right)=ax^2+by+c$  It is given the following equation where a, b and c are integers. Determine the values of a, b and c. 

state your answer as a=s,b=2,c=2

(a)  

Given that $x=5$  and  $y=-2$  , find the value of  $xy+\frac{x}{2}-6y$  .

(a)  

Given that $a=7$  ,  $b=3$  and  $c=-4$  , find the value of  $3\left(b-a\right)-5ac+14$  .

(a)