Oblicz: a)[latex](sqrt{3}-sqrt{12}+sqrt{27})*sqrt{3}[/latex] b)[latex]sqrt{45}*sqrt{5}-sqrt[3]{2}*sqrt[3]{4}[/latex] c)[latex]sqrt1{frac{3}{4}:sqrt3{frac{15}{16}+sqrt[3]{5}*sqrt[3]{25}[/latex] * to znak mnożenia : to znak dzielenia

a) [latex](sqrt{3}-2sqrt{3}+3sqrt{3})cdot sqrt{3}=2sqrt{3}cdotsqrt{3}=6 [/latex] b) [latex]sqrt{45}cdotsqrt{5}-^{3}sqrt{2}cdot ^{3}sqrt{4}=sqrt{225}-^{3}sqrt{8}=15-2=13[/latex] c) [latex]sqrt{frac{7}{4}}cdot sqrt{frac{16}{63}}+^{3}sqrt{125}=sqrt{frac{4}{9}}+5=frac{2}{3}+5=5frac{2}{3}[/latex]