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08-06-2018
Mathematics

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20PTS* - Find f(-1) if f(x)=x^2+2x+7

(with explanation)

Respuesta :

08-06-2018

[tex]f(x)=x^2+2x+7\\\\f(-1)=?[/tex]
Replace x in expression with -1

[tex]f(-1)=(-1)^2+2(-1)+7=1-2+7=6[/tex]
Answer: f(-1) = 6.

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