Răspunsuri

2014-01-17T18:49:49+02:00
(2-8/x+2):x^2-4x+4/x^2+4=
=(2-8/x+2)*x^2+4/x^2-4X+4=
=(2-8/x+2)*(x-2)(x+2)/(X-2)^2
=(2-8/x+2)*x+2/x-2
=2-8/x-2
Unde "^" inseamna la puterea si "/" supra