Răspunsuri

2014-01-20T09:42:43+02:00
X-2/2x+1 X-2/2x-4 Deci x-2/5 Deci x-2 apartine {-5,-1,1,5} Deci x apartine {-7,-3,-1 3}
2014-01-20T09:45:58+02:00
X-2/2x+1
x-2/x-2|*2
=>x-2/2x+1-2x+4
=>x-2/5
=>x-2apartine divizorilor lui 5 {1.-1.5.-5}
x={3,1,7,-3}
1 5 1