Question

va rog.....................

Answer 1

(2x-4+4+1)/(x-2)=2(x-2)/(x-2)  +5/(x-2)=2+5/(x-2)
trebuie sa gasim divizorii lui 5 in asa fel incat fractia sa dea un numar intreg
D5={-5,-1,1,5}
x-2=-5⇒x=-3
x-2=-1⇒x=1
x-2=1⇒x=3
x-2=5⇒x=7
x={-3,1,3,7}