hannahbaker77 hannahbaker77

21-10-2019
Mathematics

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Item 12 Given f(x)=3x2−5x−2 . What is the value of f(−23) ?

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briannabeatty991 briannabeatty991

23-10-2019

the answer is

-25

f(x)=3x2−5x−2

(3)(−23)(2)−(5)(−23)−2

=(−69)(2)−(5)(−23)−2

=−138−(5)(−23)−2

=−138−(−115)−2

=−23−2

=-25

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