(x + 2)^3 - (x - 2)^3 = 2x (6x + 2)
x^3 + 6x^2 + 12x + 8 - (x^3 - 6x^2 + 12x - 8) = 12x^2 + 4x
x^3 + 6x^2 + 12x + 8 - x^3 + 6x^2 - 12x + 8 = 12x^2 + 4x
12x^2 + 16 = 12x^2 + 4x
4x = 16
x = 16/4
x = 4
А) 243*a^5
б) 125*a^6*b^3*c^9
5-√16=5-4=1
корень 4 степени из 16 = 2
4-2=2