Ответ:
1) 2х/(х²-4)-2/(х²-4)=2(х-1)/(х+2)(х-2)
2) (х+1)/3(х-1)-1/(х-1)=(х+1-3)/3(х-1)=(х-2)/3(х-1)
3)2(х-1)/(х+2)(х-2)×(х-2)/3(х-1)=2/(3х+6)
х=1/2
2/(3×1/2+6)=2/(15/2)=2×2/15=4/15
Объяснение:
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Ответ:
1) 2х/(х²-4)-2/(х²-4)=2(х-1)/(х+2)(х-2)
2) (х+1)/3(х-1)-1/(х-1)=(х+1-3)/3(х-1)=(х-2)/3(х-1)
3)2(х-1)/(х+2)(х-2)×(х-2)/3(х-1)=2/(3х+6)
х=1/2
2/(3×1/2+6)=2/(15/2)=2×2/15=4/15
Объяснение: