71.0k views
2 votes
If f(x) = 2x² + 3x - 19, find f(-4)

User Ncoghlan
by
6.8k points

2 Answers

5 votes

Answer:

f(-4)=1

Explanation:

f(x) = 2x² + 3x - 19

f(-4)=2(-4)² + 3(-4)-19

f(-4)=2(-16)+3(-4)-19

f(-4)=-32+3(-4)-19

f(-4)=32-12-19

f(-4)=20-19

f(-4)=1

User Anil Maharjan
by
7.1k points
3 votes
2(-4)^2+3(-4)-19
32+(-12)-19= 1
User IDroid
by
6.8k points
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