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MrMuchimi
3 years ago
6

Let f(x) = x^2 + 6 and g(x) =(x+8/x) . Find (g ° f)(–7).

Mathematics
2 answers:
nika2105 [10]3 years ago
3 0
I hope this helps you




f (7)=7^2+6


f (7)=49+6


f (7)=55


g (f (7))=g (55)=55+8/55


g (55)=63/55
Wittaler [7]3 years ago
3 0
Base on the given values above, here is how we found the correct answer. 
At first, what we need to do is to evaluate x first. (g ° f)(–7) is equal to <span>g(f(-7)). So x = -7. So now, plug in the values: 
</span>f (7)=7^2+6
f (7)=49+6
f (7)=55
g (f (7))=g (55)=55+8/55
g (55)=63/55
So the answer would be 63/55.
Hope this answer helps. 
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