Question

Помогите решить производную.

Answer 1

$y`=(9x^3-9x^2-18x^2+18x-3x^3+9x^2)/9(x-1)^2=$$(6x^3-18x^2+18x)/9(x-1)^2$$=6(x^3+3x^2+3x)/9(x-1)^2=2(x^3+3x^2+3x)/3(x-1)^2$