решить рациональным способом (87^2-15^2)/(97^2-56^2+153*31) - №17032560

решить рациональным способом (87^2-15^2)/(97^2-56^2+153*31)
- Предмет:
  Алгебра
- Автор:
  enzochase
- 5 лет назад

Ответы 1

$\frac{87^2-15^2}{97^2-56^2+153*31}=\frac{(87-15)(87+15)}{(97-56)(97+56)+153*31}=\frac{72*102}{41*153+153*31}=\frac{72*102}{153(41+31)}=\\=\frac{72*102}{153*72}=\frac{102}{153}=\frac{34}{51}$
- Автор:
  coby
- 5 лет назад
- 0
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