Question

Determinati valorile lui x, pentru care x ° x ≤ x , legea de compozitie: x°y= (x+3)(y+3)-3

Pas cu pas vreau, multumesc!

Answer 1

x o y= (x+3)(y+3)-3

x 0 x ≤ x
(x+3)(x+3)-3 ≤ x 
(x+3)(x+3)-3-x ≤ 0 
(x+3)(x+3)-(x+3) ≤ 0
(x+3)(x+3-1) ≤ 0
(x+3)(x+2) ≤ 0