Respostas

2013-09-23T20:28:46-03:00
F(x) = 3x+5
f(x) = 3x+5 =0
f(x) = 3x-5
f(x) = x= 5+3 = 8

g(x)= 2x-3
g(x) = 2x-3=0
g(x)= 2x+3
g(x) = x=3-2
g(x) = 1

g.[f(x)] = 1
1.[f.8]=1
1.8f=1
8f = 1-1
f=8
1 5 1