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s.h_math s.h_math
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Posts: 174
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1 months ago


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wrote...
Educator
1 months ago


s.h_math Author
wrote...
A month ago
where do you get x+1 and x-1 from?
wrote...
Educator
A month ago
I common factored. For example:

7x+7 = 7(x+1)
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