Ответ: =19√2

Объяснение:

[tex]=2\sqrt{18}+3\sqrt{8}+3\sqrt{32} -\sqrt{50}[/tex] = [tex]2*\sqrt{9}*\sqrt{2} +3*\sqrt{4}*\sqrt{2} +3*\sqrt{16}*\sqrt{2} - \sqrt{25}*\sqrt{2} =[/tex]

[tex]2*3*\sqrt{2}+ 3*2*\sqrt{2} +3*4*\sqrt{2}-5*\sqrt{2} = 6\sqrt{2}+6\sqrt{2} +12\sqrt{2}-5\sqrt{2} \\[/tex] =

=19[tex]\sqrt{2}[/tex]