234k views
17 votes
Someone please help

Someone please help-example-1
User ZAY
by
4.0k points

1 Answer

7 votes

Answer:


g(g(x)) = {x}^(4) + 14 {x}^(2) + 56


h(h(x)) = x

Explanation:


g(x) = {x}^(2) + 7


g(g(x)) = {( {x}^(2) + 7)}^(2) + 7


g(g(x)) = {x}^(4) + 14 {x}^(2) + 49 + 7 = {x}^(4) + 14 {x}^(2) + 56


h(x) = (5)/(9x)


h(h(x)) = h( (5)/(9x) )


h(h(x)) = (5)/(9( (5)/(9x) )) = (5)/( (5)/(x) ) = 5( (x)/(5)) = x

User Kulbi
by
4.6k points