Răspuns: [tex]\red{\large \bf S = \big\{-2,3 \big\}}[/tex]
Explicație pas cu pas:
Salutare !
[tex]\bf Rescriem~ecuatia[/tex]
[tex]\large \bf x^{2} -\underline{x}-6=0[/tex]
[tex]\large \bf x^{2}+\underline{2x-3x}-6=0[/tex]
[tex]\large \bf x\cdot (x+2)-3\cdot (x+2)=0[/tex]
[tex]\bf Dam~ factor~ comun~ pe~ (x+2)[/tex]
[tex]\large \bf (x+2)\cdot (x-3)=0 \implies[/tex]
[tex]\large \bf x+2=0 \implies \blue{\boxed{\bf x_{1}= -2}}[/tex]
[tex]\large \bf x-3=0 \implies \blue{\boxed{\bf x_{2}= 3}}[/tex]
[tex]\red{\large \bf S = \big\{-2,3 \big\}}[/tex]
Bafta multa !
