[latex](frac{3}{7})^{2}=frac{3}{7}*frac{3}{7}=frac{9}{49}\\(frac{2}{5})^{2}=frac{2}{5}*frac{2}{5}=frac{4}{25}\\(frac{8}{7})^{2}=frac{8}{7}*frac{8}{7}=frac{64}{49}=1frac{15}{49}\\(1frac{1}{8})^{2}=(frac{9}{8})^{2}=frac{9}{8}*frac{9}{8}=frac{81}{64}=1frac{17}{64}[/latex] [latex](frac{1}{2})^{3}=frac{1}{2}*frac{1}{2}*frac{1}{2}=frac{1}{8}\\(frac{2}{3})^{3}=frac{2}{3}*frac{2}{3}*frac{2}{3}=frac{8}{27}\\(2frac{1}{2})^{2}=(frac{5}{2})^{2}=frac{5}{2}*frac{5}{2}=frac{25}{4}=6frac{1}{4}\\(1frac{1}{4})^{3}=(frac{5}{4})^{3}=frac{5}{4}*frac{5}{4}*frac{5}{4}=frac{125}{64}=1frac{61}{65}[/latex]
A ( 3/7)² = 3² / 7² = 9/49 ( 2/5 ) = 2² / 5² = 4/25 ( 8/7 )² = 8² / 7² = 64/49 = 1 15/49 ( 1 1/8 )² = (9/8)² = 9² / 8² =81/64 = 1 17/64 B ( 1/2)³ = 1³ / 2³ = 1/8 ( 2/3 )³ = 2³ / 3³ = 8/27 ( 2 1/2 )² = ( 5/2 )² = 5² / 2² = 25/4=6 1/4 (1 1/4 )³ = ( 5/4 )³ = 5³ / 4³ = 125/64 = 1 61/64 mnożenie ułmków - licznik * licznik i minownik * mianownik