a)[latex]3 sqrt{2} +2 sqrt{2} =5 sqrt{2} [/latex] b) [latex]6 sqrt{3} * sqrt{3} =18[/latex] c) [latex]8 sqrt{2} -2 sqrt{3}+4 sqrt{2} -10 sqrt{3} =12 sqrt{2} -12 sqrt{3} [/latex] d) [latex](7 sqrt{2} )^{2} =49*2=98[/latex] e) [latex]4 sqrt[3]{2} -2( sqrt[3]{2} ) ^{2} =4 sqrt[3]{2}-2 sqrt[3]{4}[/latex] Usuń niewymierność z mianownika a) [latex] frac{7}{ sqrt{7} } = frac{7}{ sqrt{7} } * frac{ sqrt{7} }{ sqrt{7} } = frac{7 sqrt{7} }{7} = sqrt{7} [/latex] b) [latex] frac{3}{ sqrt{11} } = frac{3}{ sqrt{11} } * frac{ sqrt{11} }{ sqrt{11} } = frac{3 sqrt{11} }{11} [/latex] c) [latex] frac{2}{3 sqrt{5} } = frac{2}{3 sqrt{5} } * frac{3 sqrt{5}}{3 sqrt{5}} = frac{12 sqrt{5} }{45} [/latex]
