Question 913834
lowest common denominator is {{{x^2}}}, so best suggestion is multiply the left and right members by {{{x^2}}}.  You will then solve a quadratic equation.  Do the first two steps, simplify, and you should understand a fairly predictable solution path.  The only reason you might not know how to start is forgotten what negative exponent means.


You are starting with {{{1-1/x-20/x^2=0}}}.
Multiply left and right by {{{x^2}}}.........
......in fact when you do this you should find that the quadratic is factorable.