The equation u squared = n + n has two solutions. What are they?
If n + n is to be distinguished from 2n (or if n^2 is to be distinguished from n*n) then addition and multiplication in your problem statement must have quite unusual meanings. Only in this way can I understand your refusal to grant that 2 times 2 should be the same as 2 plus 2.
10:05 AM - 29 Sep 2019
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