Răspuns
a)
[tex]a= 12\sqrt{3} + 36\sqrt{2}-12\sqrt{2} - 30\sqrt{3}\\a= -18\sqrt{3} + 24 \sqrt{2}[/tex]
[tex]b= 18\sqrt{2} +25\sqrt{3} -18\sqrt{2}-22\sqrt{3}\\b= 3\sqrt{3}[/tex]
[tex]a*b = -162+72\sqrt{6}[/tex]
b)
[tex]a= 36\sqrt{3} -20\sqrt{3} -16\sqrt{3} +20\sqrt{3} \\a= 20\sqrt{3}[/tex]
[tex]b= 24\sqrt{2} -20\sqrt{5} -24\sqrt{2} +18\sqrt{5} \\b= -2\sqrt{5}[/tex]
[tex]a*b=-40\sqrt{15}[/tex]
asta e rezolvarea, nu am mai scris si ce era in carte, sper ca te-am ajutat :)
