asked 161k views
2 votes
F(x) = –x2- 4x – 19
Find f(-9)

2 Answers

4 votes

Answer:

f(-9) = -64

Explanation:

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

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

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

f(-9) = -64

answered
User Andrew Wyld
by
9.8k points
3 votes
f(-9) = -(-9)2 - 4(-9) - 19
= 18 + 36 - 19
= 35

f(-9) = 35
answered
User HalloDu
by
7.6k points

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