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I am trying to solve:
$$\frac{1}{x-2} < \frac{1}{x+2}. $$ I think I have done so by sketching the graph, namely $-2 < x < 2 $ but I would like to see how I could have done this algebraically.

TIA

C. Dubussy
  • 9,120
Simon
  • 11

1 Answers1

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$$\dfrac1{x-2}<\dfrac1{x+2}\iff\dfrac{x+2-(x-2)}{(x-2)(x+2)}<0$$

So we need $(x-2)(x+2)<0\iff -2<x<2$