Решите уравнение:
x(x^2-6x+5)=12(x-5)

1) х^2 - 6х + 5 = D = 36 - 20 = 16 ; V D = 4 X1 = ( 6 + 4 ) : 2 = 5 X2 = ( 6 - 4 ) : 2 = 1 X•( X - 5 )•( X - 1 ) = 12•( X - 5 ) 2) X•( X - 1 ) = 12 X^2 - X - 12 = 0 D = 1 + 48 = 49 ; V D = 7 X1 = ( 1 + 7 ) : 2 = 4 X2 = ( 1 - 7 ) : 2 = - 3 Ответ : 5 ; 4 ; - 3