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Neporo4naja [7]

3 years ago

14

How to do the problem

1 answer:

vichka [17]3 years ago

4 0

12.
1: n•n= n^2
2: n•(-2)= -2n
3: 2•n= 2n
4: 2•(-2)= -4
=n^2-2n+2n-4
= n^2-4

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