g(m)=3+ m 2 −4
g(4m-2)
g(4m-2)=3+ 4 m 2 - m
g(4m-2)=3+ 16 m 2 - m
g(4m-2)=7 m 2 - m - 4
g(4m-2)=3+ 16m 2 - m +1