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I need help with this please

I need help with this please-example-1
User Jared M
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1 Answer

12 votes
12 votes

Answer:

=9-12+12

Explanation:

=n²- 4n + 12

=(3)²- 4(3) + 12

=9-12+12

I don't know if it's correct

User BlackSmith
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