Автор - kdakj

преобразуйте в многочлен (x -две пятых y )*(x-две пятых y)

Ответ

Автор - alesyaperova

(x -  frac{2}{5} y)(x -  frac{2}{5} y) = \   {x}^{2}  -  frac{2}{5} xy -  frac{2}{5} xy +  frac{4}{20}  {y}^{2}  =
 {x}^{2}  -  frac{4}{5} xy +  frac{4}{20}  {y}^{2}  =  \  {x}^{2}  -  frac{4}{5} xy +  frac{1}{5}  {y}^{2}

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