Question

х3-5х2-х+5=0 пожалуста решите

Answer 1

x^2 (x - 5) - 1(x + 5) =  0
(x - 5)(x^2 - 1) = 0
(x - 5)(x - 1)(x + 1) = 0

x = 5
x = 1
x = - 1