Respostas

2014-06-13T12:14:45-03:00
A) -(-2)-(-2)²-(-2)³-(-2)4
-2-4-(-2)³-(-2)4
-2-4+8-16
-6+8-16
-22+8
-14
b) [(-4)-(-)] . [(-4)-(-b)]
[-4/1+] . [(-4)-(-b)]
[-8/2+1/2] . [(-4)-(-b)]
[-7/2] . [(-4)-(-b)]
[-7/2] . [-4+b]