Question

x 1
------- = --
20-x x
Отдам 30 баллов, срочно решите

Answer 1

-20/x = 1-x
20/x = x-1
x^2-x-20 = 0
D = 1-4*(-20) = 81
x1 = (1-9) / 2 = -4
x2 = 1+9 / 2 = 5

Answer 2

одз можно?