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Westkost [7]
3 years ago
10

F(x)=-x^2-4x-19 Find f(−9)

Mathematics
2 answers:
maxonik [38]3 years ago
8 0

Answer:

-64.

Step-by-step explanation:

f(x)=-x^2-4x-19            Replacing x by -9:-

f(-9)= -(-9)^2-4(-9)-19

= -81 + 36 - 19

= 36 - 100

= -64.

My name is Ann [436]3 years ago
5 0

Answer:

-64

Step-by-step explanation:

f(x)=-x^2-4x-19

Let x = -9

f(-9) = - (-9)^2 -4(-9) -19

     = -81 +36 -19

     =-64

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