If

g$($x$)=$

x

x $+4$

$,$

find the following.

g$(0)=$

$0$

g$(5)=$

$53$

$6$g$($a$)$

$=$

$12$

g$(6$a$)$

$=$

g$($a$2)$

$=$

$[$g$($a$)]2$

$=$

g$($a $+$ h$)$

$=$

g$($x $$ a$)$

$=$