SOLUTION: Subract and simplify if possible h/t+h minus h/t-h

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Question 581476: Subract and simplify if possible
h/t+h minus h/t-h
Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
Subract and simplify if possible
h/t+h minus h/t-h
-------
h/(t+h) - h/(t-h)
-------
lcd = (t^2-h^2)
= [h(t-h)]/lcd - [h(t+h)]/lcd
-----------------------------------
= [ht-h^2-ht-h^2]/lcd
---------
= -2h^2/(t^2-h^2)
========================
Cheers,
Stan H.
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