Question

rezolvati ecualtia 3la puterea x+3 + 3 la putereax+2 - 3x =315

Answer 1

VOI CONSIDERA EXERCITIUL CA FIIN (3 LA X+3)+(3LA X+2)-3LA X=315⇒ SCOATEM FACTOR COMUN 3 LA X⇒3 LA X(3 LA 3+3 LA 2-1)=315⇒3 LA X*35=315⇒3 LA X=315:35⇒3 LA X=9⇒3 LAX=3²⇒X=2