SOLUTION: Simplify the expression r^-3 s^5 t^2 ----------- - r^2 st^-2

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Question 5540: Simplify the expression
r^-3 s^5 t^2
-------------
r^2 st^-2
Answer by Abbey(339) About Me  (Show Source):
You can put this solution on YOUR website!
If an exponent is a negative number, it can be made positive by crossing the division line.
For example:m%5E-2=1%2Fm%5E2
and 1%2Fm%5E-6=m%5E6
First create positive exponents:r%5E-3 should be rewritten as 1%2Fr%5E3 and 1%2Ft%5E-2 should become t%5E2
Your new equation:
s%5E5t%5E2t%5E2%2Fr%5E3r%5E2s
Combine like terms and look for cancellation opportunities:
s%5E5t%5E4%2Fr%5E5s
s%5E4t%5E4%2Fr%5E5