3 years ago

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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