tolong no 4 sama 6 yaa, makasih

turunan
4.
f(x) = (x²-3x)⁴ (2x - 5)
u = (x²-3x)⁴ --> u' =4(2x-3)(x²-3x)³
v = (2x-5) --> v'= 2

f'(x)= 4(2x-3)(x²-3x)³(2x-5) + 2(x²-3x)⁴
untuk x = - 2
f '(-2) = 4(-4-3)(4+6)³(-4-5) + 2(4+6)⁴
f '(-2)= 4(-7)(10³)(-9) + 2(10)⁴
f ' (-2)= 252 (10³) + 2(10)(10³)
f'(-2)= (252+20) (10³)= 272.10³