Question

X din ecuatia: (x+2)² - 4 = 0 este:
a) {-2, 2}
b) {-6, 0}
Rezolvare completa.

Answer 1

$(x+2)^{2} -4=0<=>(x+2+2)(x+2-2)=0<=> \\ \\ <=>(x+4)x=0 =>x+4=0~sau~x=0. \\ \\ Solutie:~x=0~sau~x=-4.$

Answer 2

Sper ca te-am ajutat .