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01-10-2018
Mathematics

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given that f(x)=x^2 -19 and g(x)=17 -x, find (f-g)(5), if it exists.

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OmegaAzzy OmegaAzzy

02-10-2018

x^2 - 19 - (17 - x).

Distribute -1 to each term of g(x).

x^2 - 19 - 17 + x.

Replace x with 5.

5^2 - 18 - 17 + 5

25 - 18 - 17 + 4

Simplify.

-6 is your answer.

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