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31 votes
31 votes
This one is confusing

This one is confusing-example-1
User Mike Gwilt
by
2.2k points

2 Answers

20 votes
20 votes

Answer:

D(-1) = 2

Explanation:

replace x with D(x), which in this case is -1

D(x) = x²-2x-1

replace x with -1

D(x) = (-1)²-2(-1)-1

Now solve using PEMDAS

User Breith
by
3.5k points
20 votes
20 votes

Answer:

it s just asking for negative d

Explanation:

User DanSkeel
by
2.9k points