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2 votes
If f(n) = n2 - n, then f(-4) is _____.
-20
20
12
-12

User Forsajt
by
7.6k points

2 Answers

0 votes

Answer:

The answer is 20.

Explanation:

The answer of this question is applying the number -4 in the equation, this is:


f(n)=n^(2) -n\\Replacing\\f(-4)=(-4)^(2) -(-4)\\f(-4)=16+4\\f(-4)=20

The answer is 20.

User Steve Prentice
by
8.5k points
2 votes
The correct option is "20" because

f(n)=n2−n
(−4)=(−4)2−(−4)
=16+4
=20
User LoudNPossiblyWrong
by
8.1k points

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