Respostas

2013-11-13T21:39:48-02:00
A) 3.4² +2.4 -5
   3.16+8-5
  48+3 =             {51}
 
b) (-3²) . -4.(-3) + 6 .5² +5
 9+12+6.25+5
9+12+150+5
21+150+5=          {176}