Difference between revisions of "User talk:Benq"
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| − | + | <math>a</math> <math>b</math> <math>c</math> <math>d</math> | |
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| + | <math>\frac{1}{a+2}+\frac{1}{b+2}+\frac{1}{c+2}+\frac{1}{d+2}</math> | ||
Revision as of 20:55, 5 December 2014
