Kak minta bantuannya ya kak …

4) f(x) = 8x-1/x+2
u = 8x-1
u' = 8
v = x + 2
v' = 1
f'(x) = u'v – uv'/ v²
f'(x) = 8(x+2) – (8x-1)/ (x+2)²
f'(x) = 17/(x+2)²
f'(x) = 17/ (x² + 4x + 4)