Tolong dong aku nggak dong ini gmna:(

10. ∫ (x-1)³ dx
u = x-1
du = 1

1∫ u³
1 . 1/3+1 u³⁺¹
1/3 u⁴
1/3 (x-1)⁴

11. (x-4) (x+3)
(x² – 4x + 3x -12)
(x² – x – 12)
( 1/2+1 x²⁺¹) – (1/1+1 x¹⁺¹) – (12/0+1 x⁰⁺¹)
1/3 x³ – 1/2 x² – 12x