SOLUTION: Evaluate the function for f(x)x^2+1 and g(x)=x-4 (f+g)(1)

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Question 883002: Evaluate the function for f(x)x^2+1 and g(x)=x-4
(f+g)(1)
Answer by Leaf W.(135) About Me  (Show Source):
You can put this solution on YOUR website!
Hello!
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(f + g)(1) essentially means f(1) + g(1) -- plug 1 into both f and g, then add the results together.
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First, let us find f(1):
f%28x%29+=+x%5E2+%2B+1
f%281%29+=+1%5E2+%2B+1+=+1+%2B+1+=+2
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Now, find g(1):
g(x) = x - 4
g(1) = 1 - 4 = -3
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Finally, add the results together:
f(1) + g(1) = 2 + (-3) = 2 - 3 = -1
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Thus, (f + g)(1) = -1
Let me know if you have any questions! =)