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If f(x)=2x-9 and g(x)=x^2+3, what is (f+g)(4)

If f(x)=2x-9 and g(x)=x^2+3, what is (f+g)(4)
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If f(x)=2x-9 and g(x)=x^2+3, what is (f+g)(4)

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User Jaquann
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1 Answer

1 vote

Explanation:


{ \tt{(f + g)(x) = (2x - 9) + ( {x}^(2) + 3) }} \\ \\ { \tt{(f + g)(x) = {x}^(2) + 2x - 6}} \: \: \: \: \: \: \: \: \: \: \: \: \: \: \\ \\ { \tt{(f + g)(4) = {(4)}^(2) + 2(4) - 6 }} \: \: \: \: \: \: \\ \\ { \tt{(f + g)(4) = 16 + 8 - 6}} \: \: \: \: \: \: \: \: \: \: \: \: \: \: \\ \\ { \tt{(f + g)(x) = 18}}

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User Penta
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