Решить уравнение: x-9sqrt(2)sqrt(-x)+20=0

Решить уравнение:
x-9sqrt(2)sqrt(-x)+20=0
- Предмет:
  Алгебра
- Автор:
  braden
- 5 лет назад

Ответы 1

x-9sqrt(2*(-x))+20=0-9sqrt(-2х)=-х-2081*(-2х)=x^2+40x+400-162x=x^2+40x+400-162x-x^2-40x-400=0-x^2-202x-400=0По формуле дискриминанта находим х1 и х2х1=-2х2=-200Подставляем в 1 уравнение:1) -2-9sqrt(2)sqrt(-(-2))+20=00=02) -200-9sqrt(2)sqrt(-(-200))+20=0-360=0 => неверноХ=-2
- Автор:
  austin88
- 5 лет назад
- 0
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Решить уравнение: x-9sqrt(2)sqrt(-x)+20=0

Ответы 1

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Решить уравнение:
x-9sqrt(2)sqrt(-x)+20=0