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

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

(with explanation)

User Tylerweir
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1 Answer

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


f(-1)=(-1)^2+2(-1)+7=1-2+7=6
Answer: f(-1) = 6.

User Marcellus
by
8.4k points
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