Question

Exx 10 fast , dau coroana.

Answer 1

10)a) X-2≠0⇒X≠2;X∈R/{2]
     b)X²+5≠0⇒X∈R
     c)3X≠0⇒X≠0;X∈R/{0}
     d)X+3≠0⇒X≠-3;X∈R/{-3}
     e)3X-5≠0⇒X≠5/3;X∈R/{5/3}
     f)2X+8≠0⇒X≠-4;X∈R/{-4}