Answers

2014-02-27T19:33:43+08:00
They have to be similar monomials, they must have the same literal part .
The sum of the 2 monomials is another monomial whose literal part is the same and whose coefficient is the sum of coefficient. :)
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2014-02-27T23:13:06+08:00
Ummm... just add them, put the terms adjacent to each other then put a plus time between them. Unless they are like (same variables), wherein you just add the coefficients then maintain the variable
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