Question content area top

Part $1$

Given that

$$h$($x$)$equals$=$xplus$+66$

and

$$g$($x$)$equals$=$StartRoot x minus $4$ EndRootx$4,$

find

left parenthesis g plus h right parenthesis left parenthesis $4$ right parenthesis$($g$+$h$)(4),$

if it exists.