Răspuns:
1. a=-1 b= 4*9/3*2= 6 [tex]a^{b}[/tex]= [tex](-1)^{6}[/tex] = 1
2. MN= (AD+CB)/2=(10+4)/2=14/2 = 7 MN=7
3. a/b= -3/2 - a/b= (-3)*(-1)/2 = 3/2 -a/b>0
