3 years ago

If f(x)=x+11 and g(x)=3x^2, find (f+g)(x) and (f+g)(5).

1 answer:

8 0

(f+g)(x) = f(x) + g(x) = x + 11 + 3x^2
(f+g)(5) = f(5) + g(5) = 5 + 11 +3(5^2) = 91

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If f​(x​)=x+11 and g(x)=3x^2​, find ​(f+​g)(x​) and ​(f+​g)(5​).