2х^2 +18/х^2+6х-27
Объяснение:
Х+3/х+9 × (Х+3)^2+(х-3)^2/(х-3)×(х+3)= 1/х+9×(х+3)^2+(х-3)^2/х-3=(х+3)^2+(х-3)^2/(х+9)×(х-3)=х^2+6х+9+х^2+6х+9/х^2-3х+9х-27=2х^2+18/х^2+6х-27
2х^2 +18/х^2+6х-27
Объяснение:
Х+3/х+9 × (Х+3)^2+(х-3)^2/(х-3)×(х+3)= 1/х+9×(х+3)^2+(х-3)^2/х-3=(х+3)^2+(х-3)^2/(х+9)×(х-3)=х^2+6х+9+х^2+6х+9/х^2-3х+9х-27=2х^2+18/х^2+6х-27