Question

exercitiul 22 b), deja am rezolvat a)

Answer 1

Daca ai rezolvat subpunctul a),  ai aflat ca  E(x)=(x-1)/((x+2);  x≠-2

b) E(x)=3(x+1)/(x+2)

=> (x-1)/((x+2)= 3(x+1)/(x+2)

Numitorul fiind acelasi => x-1=3(x+1)

3x+3=x-1

3x-x=-1-3

2x= -4

=> x=-2, nu convine (x≠-2)

=> ecuatia nu are solutii;  x∈Ф