$Evaluate:\ x^2-2\left(x-y\right)-z^3\ \ if\ x=2,\ y=-2,\ and\ z=-3$  

(a)  

 $Evaluate:\ 3\left|x+y\right|^2-\left(xy\right)^2\ \ if\ x\ =\ 3\ and\ y=-5$  

(a)  

 $Evaluate:\ \frac{a\cdot b^2}{\left|c-12\right|}-\left|b^2\right|\ \ \ \ if\ a=3,\ b=-5,\ c=-13$  

(a)  

 $Combine\ like\ terms:$  

(a)  

What is the coefficent of the term:
 $-12x$   

(a)  

 $Combine\ like\ terms:$  
 $4x\ -6y+3-7y-9x-12$  


(a)  

 $Simplify:\left(use\ your\ calculator\right)$  
 $\frac{\left(9-15\right)^2\cdot\left(7-2^2\right)}{\sqrt{49}+5}-\left|-5\right|$  

(a)  

 $Simplify:\left(use\ your\ calculator\right)$  
 $\frac{7-\left(\left|10-12\right|+5^2\right)}{9-2^2}$  

(a)  

 $Simplify\ \left(use\ your\ calculator\right):$  
 $\frac{\left(15-\left(\left|-6+2\right|+\sqrt{9}\right)\right)^2-3}{4^3-\left|-8\right|\cdot6\div16}$  



(a)  

 $Combine\ like\ terms:$  
 $-7\left(-6+2n\right)-12n-20$  


(a)