Tolong ya kk…buat besok nih

Duh, males nulisnya… mana kamera hp blur… yg nomer 3 aja yah, gampang ngetiknya
3. a. y' = 6x² – 10
b. y = 4x⁴ + 28x³ + 49x²
y' = 16x³ + 84x² + 98x
c. y = (x-3) / (3x+1)
u = x-3 -> u' = 1
v = 3x+1 -> v' = 3
y' = (u'.v) – (u.v') / v²
= (3x+1) – 3(x-3) / (3x+1)²
= 3x+1-3x+9 / (3x+1)²
= 10/(3x+1)²