3 years ago

F(x) = –x2- 4x – 19 Find f(-9)

Mathematics

2 answers:

Jlenok [28]3 years ago

6 0

F(-9) = -(-9)2 - 4(-9) - 19
= 18 + 36 - 19
= 35

f(-9) = 35

gavmur [86]3 years ago

5 0

Answer:

f(-9) = -64

Step-by-step explanation:

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

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

f(-9) = -81 + 36 - 19

f(-9) = -64

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