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5/x + 2/x^2

I don't know what the answer 
 

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Robert A. | Certified Teacher and Engineer - Tutoring Physics, Maths, and SciencesCertified Teacher and Engineer - Tutorin...
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I don't know the answer either.  -  Let's find it.
 
5  +  2
x      x2
 
A common denominator is  x2
 
5x + 2      now you can add them
x2    x2
 
(5x + 2)/ x2