Odpowiedź :
[tex]3 \sqrt{27} -3\sqrt{12} =3\sqrt{9*3} - 3\sqrt{4*3} = 3\sqrt{3^{2}*3 } -3\sqrt{2^{2} *3} = 3*3\sqrt{3} - 3*2\sqrt{3} = 9\sqrt{3} -6\sqrt{3} =3\sqrt{3}[/tex]
[tex]3 \sqrt{27} -3\sqrt{12} =3\sqrt{9*3} - 3\sqrt{4*3} = 3\sqrt{3^{2}*3 } -3\sqrt{2^{2} *3} = 3*3\sqrt{3} - 3*2\sqrt{3} = 9\sqrt{3} -6\sqrt{3} =3\sqrt{3}[/tex]