| * 6x (x + 5)
6 (x + 5) + 6x - x (x + 5) = 0
6x + 30 + 6x - x² - 5x = 0
- x² + 7x + 30 = 0
x² - 7x - 30 = 0
x₁ + x₂ = 7
x₁ * x₂ = - 30
x₁ = - 3; x₂ = 10
Ответ: x₁ = - 3; x₂ = 10
Вот решение.
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Pi--->180 gr
5*180/18=50 gr
180/5=36 gr
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