Question 154268
1.)  4z                          
   __________   =4z/4(2z-3)=z/(2z-3) 
                          
     8z-12   

2). z^3+4z^2
    ----------- = (z^2)(z+4)/(z+4)(z+4)=z^2/(x+4)
    z^2+8z+16