Ответ:
Смотри решение на фото...
1) [tex]10\sqrt{3} -\sqrt{48}-\sqrt{75}= 10\sqrt{3} - \sqrt{16*3} -\sqrt{25*3} =10\sqrt{3} -4\sqrt{3} -5\sqrt{3}=\sqrt{3}[/tex]
Вiдповiдь: [tex]\sqrt{3}[/tex]
2) [tex](\sqrt{2}-\sqrt{18})*\sqrt{2}= (\sqrt{2})^2-\sqrt{18*2}}= 2-\sqrt{36}=2-6=-4[/tex]
Вiдповiдь: [tex]-4[/tex]
3) [tex](3-\sqrt{5} )^2=9-2*3*\sqrt{5} +(\sqrt{5} )^2=9-6\sqrt{5}+5=14-6\sqrt{5}[/tex]
Вiдповiдь: [tex]14-6\sqrt{5}[/tex]
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Ответ:
Смотри решение на фото...
1) [tex]10\sqrt{3} -\sqrt{48}-\sqrt{75}= 10\sqrt{3} - \sqrt{16*3} -\sqrt{25*3} =10\sqrt{3} -4\sqrt{3} -5\sqrt{3}=\sqrt{3}[/tex]
Вiдповiдь: [tex]\sqrt{3}[/tex]
2) [tex](\sqrt{2}-\sqrt{18})*\sqrt{2}= (\sqrt{2})^2-\sqrt{18*2}}= 2-\sqrt{36}=2-6=-4[/tex]
Вiдповiдь: [tex]-4[/tex]
3) [tex](3-\sqrt{5} )^2=9-2*3*\sqrt{5} +(\sqrt{5} )^2=9-6\sqrt{5}+5=14-6\sqrt{5}[/tex]
Вiдповiдь: [tex]14-6\sqrt{5}[/tex]