Given the function f (x) = -5x² – 2 + 20, find f (2).

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10-01-2020
Mathematics

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Given the function f (x) = -5x² – 2 + 20, find f (2).

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ProfessorAlvarez ProfessorAlvarez · Answer 1 · 2020-01-10T22:00:29+01:00

ProfessorAlvarez ProfessorAlvarez

10-01-2020

[tex]\text{Plug in 2 into x:}\\\\f(x) = -5(2)^2-2+20\\\\\text{Solve:}\\\\f(x) = -5(2)^2-2+20\\\\f(x) = -5(4)-2+20\\\\f(x) = -20-2+20\\\\f(x)=-22+20\\\\\boxed{f(x)=-2}[/tex]

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