Răspuns :
Răspuns:
[tex]9 \sqrt{3} + 2 \times 5 \sqrt{3} - 7 \sqrt{3} = \\ 9 \sqrt{3} + 10 \sqrt{3} - 7 \sqrt{3} = \\ 19 \sqrt{3} - 7 \sqrt{3} = 12 \sqrt{3} [/tex]
Răspuns:
[tex]9 \sqrt{3} + 2 \times 5 \sqrt{3} - 7 \sqrt{3} = \\ 9 \sqrt{3} + 10 \sqrt{3} - 7 \sqrt{3} = \\ 19 \sqrt{3} - 7 \sqrt{3} = 12 \sqrt{3} [/tex]