(x-3)(x^2+3x+9)-x(x+5)(x-5)=23

Question

(x-3)(x^2+3x+9)-x(x+5)(x-5)=23

Answer 1

( x - 3 )( x^2 + 3x + 9 ) - x( x + 5 )( x - 5 ) = 23
X^3 - 27 - x( x^2 - 25 ) = 23
X^3 - 27 - x^3 + 25x = 23
25x = 23 + 27
X = 50 : 25
X = 2
Ответ 2