Question

(x+2)куб=x куб+8 ПОМОГИТЕ НЕ МОГУ РЕШИТЬ

Answer 1

(x + 2)³ = x³ + 8
(x + 2)³ = (x + 2) • (x² - 2x + 4)
(x + 2)³ - (x + 2) • (x² - 2x + 4) = 0
(x + 2) • ((x + 2)² - (x² - 2x + 4)) = 0
(x + 2) • ((x + 2)² - x² + 2x - 4) = 0
x + 2 = 0
(x + 2)² - x² + 2x - 4 = 0
x1 = -2
x2 = 0

Answer 2

Х^3+8=х^3+8
Х^3=8-8
Х^3=0