Question

решите систему уравнений х+у=19 ху=60

Answer 1

Решение
x + y = 19
x*y = 60

y = 19 - x
x*(19 - x) = 60

x² - 19x + 60 = 0
x₁ = 4
x₂ = 15

x₁ = 4
y₁ = 19 - 4
y₁ = 15

x₂ = 15
y₂ = 19 - 15
y₂ = 4

Ответ(4;15) (15;4)