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30-03-2017
Mathematics

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7. Which answer is equal to (f – g)(5) or f(5) – g(5), given f(x) = x + 2 and g(x) = x² + 5?

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ghanami ghanami

30-03-2017

Hello:
(f – g)(5) = f(5) – g(5) = (5+2)-((5)²+5) = 7-30
(f – g)(5) = -23

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