Răspuns:
1.
[tex] \sqrt{2} + \sqrt{8} - \sqrt{18} + \sqrt{16} = \\ \\ = \sqrt{2} + 2 \sqrt{2} - 3 \sqrt{2} + 4 = \\ \\ = 3 \sqrt{2} - 3 \sqrt{2} + 4 = \\ \\ = 4[/tex]
2.
[tex] \sqrt{3} + \sqrt{12} + \sqrt{27} - \sqrt{75} = \\ \\ = \sqrt{3} + 2 \sqrt{3} + 3 \sqrt{3} - 5 \sqrt{3} = \\ \\ = 6 \sqrt{3} - 5 \sqrt{3} = \\ \\ = \sqrt{3} [/tex]
3.
[tex]2 \sqrt{2} + 5 \sqrt{8} + 6 \sqrt{18} = \\ \\ = 2 \sqrt{2} + 10 \sqrt{2} + 18 \sqrt{2} = \\ \\ = 30 \sqrt{2} [/tex]
4.
[tex] \sqrt{6} \times \sqrt{8} \div \sqrt{3} = \\ \\ = \sqrt{48} \div \sqrt{3} = \\ \\ = \sqrt{16} = \\ \\ = 4[/tex]
Succes! ♡︎♥︎♡︎
