Упростите выражение плиз!! (1/(х-1) - 1/(х+1))* х^2+х/4х

Question

Упростите выражение плиз!!
(1/(х-1) - 1/(х+1))* х^2+х/4х

Answer 1

=(х+1-х+1)/(х-1)(х+1) ×х(х+1)/4х=
=2/(х-1)(х+1) ×(х+1)/4=1/2(х-1)

Comments

можно подробнее плиз?

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при х=0.5

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=1/2(0.5-1)=1/(2×(-0.5))=1/(-1)=-1