Cartocar1
Cartocar1
06-03-2017
Mathematics
contestada
How to do the problem
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tyler904
tyler904
06-03-2017
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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