Question

решите уравнение 
(х-1)(х^2+6х+9)=5(х+3)

Answer 1

(х -1)( х^2 + 6х + 9) = 5(х+3)
(x - 1)(x + 3)^2 - 5(x+3) = 0 
(x + 3) ( (x - 1)(x + 3) - 5) = 0
(x+3) ( x^2 + 2x - 8) = 0
( x +3) (x + 4 )( x - 2) = 0
x =  - 3
x = - 4 
x = 2