For f(x) = 2x+1 and g(x) = x2 - 7, find (f+9)(x).

asked May 15, 2020 52.8k views

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Answer:

$\large\boxed{(f+g)(x)=x^2+2x-6}$

Explanation:

$(f+g)(x)+f(x)+g(x)\\\\f(x)=2x+1,\ g(x)=x^2-7\\\\(f+g)(x)=(2x+1)+(x^2-7)=2x+1+x^2-7=x^2+2x-6$

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