berapa hasil dari integral ini

Int 4(x - 3)^2 / x^5 dx
= Int 4(x^2 - 6x + 9)x^-5 dx
= Int (4x^-3 - 24x^-4 + 36x^-5 dx
= (4/-2)x^-2 - (24/-3)x^-3 + (36/-4)x^-4 + C
= -2x^-2 + 8x^-3 - 9x^-4 + C

a.4(x-3)x³
=4(x-3)x 1/x³
=4/x³×(x-3)
=4x-12/x³
b.4(x-3)x-⁴
=4(x-3)x 1/x⁴
=4/x⁴×(x-3)
=4x-12/x⁴