2.8.75
Given functions f and g, find (a) (fog)(x) and its domain, and (b) (gof)(x) and its domain.
f(x) = Vx, g(x) = x +7
(a) (fog)(x) = 0
(Simplify your answer. Type an exact answer, using radicals as needed.)

2875 Given functions f and g find a fogx and its domain and b gofx and its domain fx Vx gx x 7 a fogx 0 Simplify your answer Type an exact answer using radicals class=