Problem

Let g(x)=x+6. Find f(x) so that h(x)=(fg)(x).
h(x)=x+6+5
f(x)=

Answer

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Answer

The final answer is f(x)=x+5

Steps

Step 1 :Given that h(x)=(fg)(x)=x+6+5, we want to find f(x).

Step 2 :We know that g(x)=x+6, so we can substitute g(x) into h(x) to get h(g(x))=g(x)+6+5

Step 3 :Since h(x)=(fg)(x), we can equate h(g(x)) and h(x) to find f(x)

Step 4 :So, f(x)=x+6+5

Step 5 :Therefore, f(x)=x+5

Step 6 :Checking our result, we substitute f(x) into h(x) to get h(x)=g(x)+6+5=x+6+5, which is the original equation.

Step 7 :So, our result is correct.

Step 8 :The final answer is f(x)=x+5

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