(f+g)(x)= 2x +1
1) In this case, we have an operation of functions. The function algebra then we can write out:
f(x) = x +5
g(x) = x-4
(f+g)(x)= x+5 +x-4 Combine like terms
2) Hence, the answer is (f+g)(x)= 2x +1
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