Площадь прямоугольника равна 480 см 2 найдите его стороны если их сумма равна 47 см - №31339667

Площадь прямоугольника равна 480 см 2 найдите его стороны если их сумма равна 47 см
- Предмет:
  Алгебра
- Автор:
  bbcox
- 6 лет назад

Ответы 1

x*(47-x) = 48047x-x²=480x²-47x+480=0D = 47²-480*4=289=17²х=(-b-√D)/2a=(47-17)/2=15ответ: 15 и 32 см
- Автор:
  ariel30
- 6 лет назад
- 0
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