Odpowiedź :
Odpowiedź:
[tex]1.( \sqrt{3} + 2 \sqrt{2} )(4 \sqrt{3} - 8 \sqrt{2} ) = 4 \times 3 - 8 \sqrt{6} + 8 \sqrt{6} - 16 \times 2 = 12 - 32 = - 20 \\ 2.(2 \sqrt{5} - 4 \sqrt{2} )(2 \sqrt{2} + \sqrt{5} ) = 4 \sqrt{10} + 2 \times 5 - 8 \times 2 - 4 \sqrt{10 } = 10 - 16 = - 6[/tex]
Odpowiedź:
[tex]1)\ \ (\sqrt{3}+2\sqrt{2})(4\sqrt{3}-8\sqrt{2})=4\sqrt{9}-8\sqrt{6}+8\sqrt{6}-16\sqrt{4}=4*3-16*2=\\\\=12-32=-20\\\\\\2)\ \ (2\sqrt{5}-4\sqrt{2})(2\sqrt{2}+\sqrt{5})=4\sqrt{10}+2\sqrt{25}-8\sqrt{4}-4\sqrt{10}=2*5-8*2=\\\\=10-16=-6[/tex]