[tex](3\sqrt{5} - 3)(3\sqrt{5} + 3) \\\\(3\sqrt{5})^{2} - 3^{2}\\\\9(5) - 9\\\\45 - 9\\\\36[/tex]
Eternamente axllxa
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[tex](3\sqrt{5} - 3)(3\sqrt{5} + 3) \\\\(3\sqrt{5})^{2} - 3^{2}\\\\9(5) - 9\\\\45 - 9\\\\36[/tex]
Eternamente axllxa