Respostas

  • Usuário do Brainly
2014-05-23T17:52:48-03:00


a)   Primeiro g(10)=20/5+1=5                 f(5)=2x-1= 10-1 = 9

b)   2(2x/5 +1 )-1=0            4x/5 +2-1=0             4x/5 +1=0           4x+5=0         x=-5/4