Solve Fractions Question Homework: Methodology Needed

  • Thread starter GreenMind
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  • #1

Homework Statement
Can someone please give me the methodology/rules for this to happen?

Homework Equations


The Attempt at a Solution

I know there is nothing you can factor out here so I am confused as to how this result is possible.

Any help appreciated.
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  • #2
Start by dividing the numerator through by R^4. See what you think after that. Then look at the denominator. I don't see where the negative sign in front ends up going to though.
  • #3
Thank you, Hage567 that helped me. The negative sign I just forgot when I typed in it really should be there.

I forgot that that you don't need to divide the whole equation just the denominator or numerator when trying to cancel out.

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