Question

хелп пжлст срочно..........
x(5+x)(x-5)-(x-3)(x²+3x+9)= -23

Answer 1

x(5+x)(x-5)-(x-3)(x²+3x+9)= -23
x(x² - 25) - (x³ - 3³) = -23
x³ - 25x - x³ + 27= -23
-25x= -23 - 27
-25x= - 50
x= -50 : (-25)
x=2
Ответ: 2.