Respostas

2013-06-26T16:22:30-03:00

fog=> f(g(x))--- f= x+5--- (x²-1)+5=>x²+4

gof=> g(f(x))----g= x²-1---- (x+5)²-1=> x²+10x+25-1=>x²+10x+24

2 4 2