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)

Answer 2

можно подробнее плиз?

Answer 3

при х=0.5

Answer 4

=1/2(0.5-1)=1/(2×(-0.5))=1/(-1)=-1