Odpowiedź :
[tex]3(x+1)^2 - 9=0\ \ \ |:3\\\\(x+1)^2-3=0\\\\(x+1-\sqrt3)(x+1+\sqrt3)=0\\\\\\\x+1-\sqrt3=0 \ \ \ lub\ \ \ x+1+\sqrt3=0\\\\x=-1+\sqrt3 \ \ \ \ \ \ \ \ \ \ \ \ \ x=-1-\sqrt3[/tex]
[tex]3(x+1)^2 - 9=0\ \ \ |:3\\\\(x+1)^2-3=0\\\\(x+1-\sqrt3)(x+1+\sqrt3)=0\\\\\\\x+1-\sqrt3=0 \ \ \ lub\ \ \ x+1+\sqrt3=0\\\\x=-1+\sqrt3 \ \ \ \ \ \ \ \ \ \ \ \ \ x=-1-\sqrt3[/tex]