Răspuns :
Verificam:
2x+3 = 1
2x = 1-3
2x = -2
x = -1
⇒ Fals , are solutii rationale
-1∈ Q
Q = multimea numerelor rationale
2x+3 = 1
2x = 1-3
2x = -2
x = -1
⇒ Fals , are solutii rationale
-1∈ Q
Q = multimea numerelor rationale