Răspuns:
[tex] \large \bf (x+3) \cdot(x-7)=0 \implies[/tex]
[tex] \large \bf x+3=0 \implies x_{1} = - 3[/tex]
[tex]\large \bf x - 7=0 \implies x_{2} = 7[/tex]
[tex]\red{\large \bf x\in \{ - 3 ; 7 \}}[/tex]
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