Question

(Х+5)^3=25(х+5)
Решите, пожалуйста

Answer 1

(Х+5)^3=25(х+5)
(Х+5)^3/(х+5) = 25(х+5)/ (х+5)
(Х+5)^2 = 25
(Х+5)^2 = 5^2
X^2 + 10x + 5^2 – 5^2 = 0
x ^2 + 10x = 0
x (x +10) = 0
x = 0
x +10 = 0
x = -10   x = 0