Question

Rezolvati in Q Ecuatia
|3x+9|=-6
|0.01x-0.02|=0
Va rog frumos

Answer 1

1. S=multimea vida (pentruca modulul unui numar nu poate fi negativ) ; 2. |0.01x-0.02|=0 =>0.01x-0.02=0 =>0.01x=0.02 => x= 0.02/0.01 ; x= 2 deci S={2}