tolong ya kk. terima kasih

f(x) = (x² + x)√5x + 1
f(x) = (x² + x)(5x + 1)^1/2
u = x² + x
u' = 2x
v = (5x + 1)^1/2
v' = (5/2x + 1/2)^-1/2
f'(x) = u'v + uv'
       = 2x.(5x + 1)^1/2 + (x² + x).(5/2x + 1/2)^-1/2
f'(3) = 2(3).(5(3) + 1)^1/2 + ((3)² + 3).(5/2(3) + 1/2)^-1/2
       = 6.(16)^1/2 + (12).(16/2)^-1/2
       = 6(4²)^1/2 + 12(4²/2)^-1/2
       = 24 + 24
       = 48