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Ответ

Ответ дан
sumaya13q

Ответ:

  1. 5
  2. 4
  3. 7 frac{6}{25} = 7, 24

Пошаговое объяснение:

  1. (2frac{1}{3}) ^{2} - frac{4}{9} = (frac{7}{3}) ^{2} - frac{4}{9} = frac{49}{9} - frac{4}{9} = frac{49-4}{9} = frac{45}{9} = 5
  2. 3frac{5}{9} + (frac{2}{3} )^{2} = frac{32}{9} + frac{4}{9} = frac{32+4}{9} = frac{36}{9} = 4
  3. 7frac{2}{5} - (frac{2}{5} )^{2} = frac{37}{5} - frac{4}{25} = frac{37*5}{5*5} - frac{4}{25} = frac{185}{25} - frac{4}{25} = frac{185-4}{25} = frac{181}{25} = 7 frac{6}{25} = 7, 24

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