caitlinesmith00
caitlinesmith00 caitlinesmith00
  • 02-04-2017
  • Mathematics
contestada

HELP - PICTURE BELOW
Can someone please explain to me how to answer this???

HELP PICTURE BELOW Can someone please explain to me how to answer this class=

Respuesta :

rahmasaleh00
rahmasaleh00 rahmasaleh00
  • 02-04-2017
find the lowest common multiple.
thus 1/[x2+x] +1/[x2-x]=x2-x+x2+x/[(x2-x)(x2+x)]
                                    =2x2/[x4-x2]
                                    =2/[x2-1]
answer is B
Answer Link

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