Respostas

2013-06-27T20:41:54-03:00

a) 2^{2}-2.2 - 3 = 4 - 4 - 3 = -3

b) (-2)^{2}- 2. (-2) - 3= 4 + 4 - 3= 5
c)0^{2}  - 2.0 - 3 = 0-0-3 = -3
d) [1/2^{2}- 2. 1/2 - 3 = 1/4 - 1 - 3 = 1/4 - 4 = -15/4

2 4 2