Răspuns :
Răspuns:
[tex]3 \times ( \sqrt{3 } - \sqrt{18}) + 9 \sqrt{2} = \\ \\ 3 \times ( \sqrt{3} - 3 \sqrt{2} ) + 9 \sqrt{2} = \\ \\ 3 \sqrt{3} - 9 \sqrt{2} + 9 \sqrt{2} = \\ \\ 3 \sqrt{3} [/tex]
Răspuns:
[tex]3 \times ( \sqrt{3 } - \sqrt{18}) + 9 \sqrt{2} = \\ \\ 3 \times ( \sqrt{3} - 3 \sqrt{2} ) + 9 \sqrt{2} = \\ \\ 3 \sqrt{3} - 9 \sqrt{2} + 9 \sqrt{2} = \\ \\ 3 \sqrt{3} [/tex]