Respostas

2013-09-16T12:15:17-03:00
Acho que é assim:
a) Y=3.9+2.3.2+3.(2)²
Y:27+12+3.4
Y=39+12
Y=51

b)Y=4.(3+2)+4.4-4.2
Y=4.5+16-8
Y=20+16-8
Y=36-8
Y=28