Question 156646
Multiply 
(c+1/3)(c+1/2)
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= c*(c+1/2) + 1/3(c+1/2)
= c^2 + c/2 + c/3 + 1/6
= c^2 + 5c/6 + 1/6
Multiply by each term, then collect terms.  That's all.