tolong ya kk. terima kasih

f(x) = (x - 5)/(x + 5)

misalkan
u = (x - 5) maka u' = 1
v = (x + 5) maka v' = 1

f(x) = u/v
f'(x) = (u'v - uv')/v²
f'(x) = (1(x + 5) - (x - 5)1) / (x + 5)²
f'(x) = (x + 5 - x + 5) / (x + 5)²
f'(x) = 10 / (x + 5)²

Jawabannya C